The Four Dharmadhātus — From Phenomena to Unobstructed Phenomena-and-Phenomena, a Perfect-Teaching Reading of Making Extensive Offerings
8.3 The Four Dharmadhātus — From Phenomena to Unobstructed Phenomena-and-Phenomena, a Perfect-Teaching Reading of Making Extensive Offerings
The previous chapter ended with a question. If the three layers of description are all operating at once in our nature, then how, within the bodily actions of daily life, do they happen simultaneously?
This chapter takes that question head-on. The answer will turn out to be finer-grained than three layers—it is in fact four—but this added detail does not make matters more complicated. On the contrary, it makes the landing clearer. The way in is a single stick of incense.
One Step from the Heart Sūtra to the Avataṃsaka
Part Two of this book walked all the way through the Prajñāpāramitā Hṛdaya Sūtra, the Heart Sūtra. The core architecture of the Heart Sūtra, condensed into the fewest words, is "form is emptiness." Add the matching line "emptiness is form," and you have the entire skeleton of the Heart Sūtra's teaching. Form and emptiness mutually pervade in both directions—the relation between a phenomenon (form) and a quality (emptiness) is pried open by that one word, "is."
This structure is in itself ultimate. A reader can rest within the Heart Sūtra for an entire lifetime and fully enter into emptiness, with no need to take any further step.
But if a reader becomes stable within this structure, the next question naturally surfaces—
What, then, about the relation between one form and another form?
What about the relation between this stick of incense and that flower? Between this thought-moment and the next? Between this sentient being and another?
The Heart Sūtra does not unfold this question directly. The work of the Heart Sūtra is to dismantle that most fundamental cognitive inversion—the perceived opposition between form and emptiness—and to stabilize the practitioner in the contemplation that "phenomena and principle are originally not two." Once that work is complete, prajñā is complete. To proceed from this foundation is the work of the Avataṃsaka.
The Avataṃsaka's answer is extremely simple: forms are mutually identical and mutually interpenetrating; each phenomenon is unobstructed with respect to every other phenomenon; yet each phenomenon remains this very phenomenon.
This stick of incense is mutually identical with that flower, but the stick of incense does not become the flower. The flower is mutually identical with the lamp, but the flower does not become the lamp. Difference is preserved; it is only that there is no obstruction between the differences.
This structure has a name in the Huayan school: the dharmadhātu of the unobstructed interpenetration of phenomena and phenomena.
⚠️ Before going further, a necessary reminder. "Taking one step forward from the Heart Sūtra" is not a judgment of high and low—the Heart Sūtra is ultimate, and the Avataṃsaka does not surpass it. The Heart Sūtra and the Avataṃsaka are two unfoldings of the same dharma-realm at two different reception bandwidths (this was the container thesis of the previous chapter). When this chapter says "continue one step further," it means a natural extension of the doctrinal structure, not an elevation in the attainment of practice. The one who can fully enter the Heart Sūtra's "form is emptiness" and the one who can fully enter the Avataṃsaka's "phenomena-and-phenomena unobstructed" have realized one and the same dharma-realm.
The Four Dharmadhātus
Unobstructed phenomena-and-phenomena is the fourth of the four dharmadhātus in the Huayan school.
The genealogy of the four dharmadhātus has a small piece of history that must be told first. These four terms are in fact not entirely the original words of Dushun, the first patriarch of the Huayan school. Dushun (557–640) established a system of contemplation gates in the Contemplation of the Dharmadhātu (Huayan fajie guanmen), and he set up only three layers: the contemplation of true emptiness, the contemplation of the unobstructed interpenetration of principle and phenomena, and the contemplation of universal pervasion and mutual containment. The dharma-realm of phenomena was not listed by him as an independent contemplation gate. The fifth patriarch of the Huayan school, Zongmi, explains the reason plainly in his annotation: "The phenomenal dharma-realm is excluded. Phenomena do not stand independently. Within the lineage of the dharma-realm there are no isolated phenomena. If one were to contemplate phenomena alone, that would be the field of ordinary deluded calculation, not the field of contemplative wisdom." Phenomena cannot become the object of contemplation on their own; to look at phenomena in isolation is to look at the object of ordinary deluded fabrication, not the object of contemplative wisdom.
The systematic ordering of the standard term "four dharmadhātus" was not completed until Chengguan (738–839), the fourth patriarch of the Huayan school. Following Chengguan's account, Zongmi formally folded Chengguan's definitions into his annotation of Dushun's three contemplations in the Annotation on the Contemplation of the Dharmadhātu, and so arose this standard definition:
The whole is uniformly the one true dharma-realm, which is to say, that which encompasses the manifold of existence—that is, the one mind. Yet the mind, in fusing the manifold of existence, becomes four kinds of dharma-realm. First, the dharma-realm of phenomena: "dhātu" here means "differentiation"—each individual is differentiated and has its own measure. Second, the dharma-realm of principle: "dhātu" here means "nature"—the inexhaustible phenomena share one nature. Third, the dharma-realm of the unobstructed interpenetration of principle and phenomena: it possesses both the meaning of nature and the meaning of differentiation, with nature and differentiation being unobstructed with respect to one another. Fourth, the dharma-realm of the unobstructed interpenetration of phenomena and phenomena: every differentiated phenomenon, in accordance with its nature, is fused into communication with every other, layer upon layer without end.
This passage is the most refined overall statement of the Huayan contemplation of the dharma-realm. The four dharmadhātus open out layer by layer:
The dharma-realm of phenomena (事法界). The world of differentiation. Each phenomenon has its own particular character, and there are clear boundaries between them. A stick of incense is a stick of incense; a flower is a flower; this thought-moment is this thought-moment, and that thought-moment is that thought-moment. Zongmi's definition: "Each individual is differentiated and has its own measure." Each phenomenon has its own scope, and at the level of the dharma-realm of phenomena that scope is real.
The dharma-realm of principle (理法界). The world of equality of nature. All phenomena are equal at the level of natural emptiness, absence of self-nature, and dependent origination. The self-nature of a stick of incense is empty, and so is the self-nature of a flower; the self-nature of this thought-moment is empty, and so is the self-nature of that thought-moment. Zongmi says: "The inexhaustible phenomena share one nature." All phenomena, though they have inexhaustible differences at the phenomenal level, are uniform on this one point of "absence of self-nature." The Heart Sūtra's "the five aggregates are all empty" is precisely the contemplation at this layer.
The dharma-realm of the unobstructed interpenetration of principle and phenomena (理事無礙法界). The non-duality of phenomena and principle. Each phenomenon is simultaneously the manifestation of emptiness; each instance of emptiness is simultaneously the support for a phenomenon. Fazang put it most clearly with the metaphor of water and waves—the wave that is fully water does not equal the whole of water (the wave is only one form of water), and the water that is fully wave does not equal any one wave (water is not only this one wave), yet water and waves are not two things. The relation between phenomena and principle is just the relation between water and waves.
This is precisely the layer reached by the Heart Sūtra's "form is emptiness, emptiness is form." "Form is emptiness" is phenomenon-as-principle; "emptiness is form" is principle-as-phenomenon; the "unobstructedness" of the two is the literal definition of the dharma-realm of unobstructed principle-and-phenomena. The Heart Sūtra stops here.
The dharma-realm of the unobstructed interpenetration of phenomena and phenomena (事事無礙法界). The mutual identity and mutual interpenetration of one phenomenon with another. Each phenomenon is unobstructed with respect to every other phenomenon, yet each phenomenon remains this very phenomenon. Zongmi's definition: "Every differentiated phenomenon, in accordance with its nature, is fused into communication with every other, layer upon layer without end." The reason each phenomenon can be mutually identical with every other is not that there is some mysterious physical link among phenomena, but that each phenomenon exists "in accordance with its nature" (that is, in accordance with emptiness of nature), and that therefore each phenomenon, at the level of "being-as-its-nature," is fused with every other.
To move from the third layer to the fourth is the key leap in the entire Huayan contemplation of the dharma-realm. The hinge of this leap lies in a single sentence of Chengguan's:
Only by way of the unobstructed interpenetration of principle and phenomena can one then attain the unobstructed interpenetration of phenomena and phenomena.
Without the foundation of unobstructed principle-and-phenomena, phenomenon and phenomenon are simply phenomena that obstruct one another; only after unobstructed principle-and-phenomena can phenomenon and phenomenon be unobstructed at the level of "in accordance with principle." This is why the Heart Sūtra is the necessary foundation of the Avataṃsaka, and why the Avataṃsaka does not replace the Heart Sūtra—without the Heart Sūtra's bidirectional interpenetration of form and emptiness, unobstructed phenomena-and-phenomena would be rhetoric hanging in midair.
Unobstructed Phenomena-and-Phenomena Is Not Pantheism, Nor Is It Supernatural Power
Unobstructed phenomena-and-phenomena is the most easily misread teaching in the Huayan school, and there are two directions of misreading that must be sealed off.
Misreading one: pantheism. "All things mutually fuse, so all things are one." "All things are one body—you are I, I am you." "I am no different from the Buddha, so I just am the Buddha." This reading takes "unobstructed" to mean "fused into one," and reads the Avataṃsaka as a kind of monism.
Fazang, in the Treatise on the Five Teachings, explicitly seals off this reading: "Although the one and the many mutually contain and accept one another in unobstructed self-existence, their substances remain distinct." And: "Without destroying the phenomenon, every single mote of dust is fully equipped with all the differentiated phenomena of the dharma-realm."
Substances distinct, phenomena not destroyed. These two phrases are the fundamental boundary line between unobstructed phenomena-and-phenomena and pantheism. This stick of incense is mutually identical with that flower, but the substance of the stick of incense does not equal the substance of the flower. Mutual identity speaks of a structural connection between two events within the dharma-realm; it does not speak of an identity of the two events. If mutual identity is read as identity, then the Avataṃsaka has been read as Spinoza's doctrine of a single substance—and the Avataṃsaka explicitly rejects that direction. "I am mutually identical with the Buddha" does not equal "I just am the Buddha." Mutual identity preserves difference; identity dissolves difference—the directions are opposite.
Misreading two: supernatural transformation. "A stick of incense really does become all offering implements; this is some kind of supernatural event." "When I recite one name of the Buddha, this is equivalent to having performed all forms of merit, so I do not need actual practice." This reading takes unobstructed phenomena-and-phenomena to be supernatural power or a cheap shortcut to becoming a Buddha.
Fazang handles this misreading just as directly:
All of these are real meanings, not transformations effected by divine power. They are objects within the field of wisdom in accordance with truth, in accordance with quantity. The other matters of transformation do not enter into this category. Why? Because all of these are the real virtues belonging to the household of dharma-nature. They are naturally so. They are not the field of discriminating consciousness.
Unobstructed phenomena-and-phenomena is a real virtue, naturally so—not the result of supernatural transformation. It can be measured only by the wisdom that corresponds to truth; it is beyond what the imaginings or speculations of ordinary persons can reach. The line "the other matters of transformation do not enter into this category" explicitly excludes supernatural transformation from unobstructed phenomena-and-phenomena.
The "is" in "a stick of incense is all offering implements" is not "physically becomes," but "is mutually identical within the structure of the dharma-realm." Without the foundation of phenomena being fused as principle is, a stick of incense is just a stick of incense; with this foundation, a stick of incense structurally contains the entire structure of all offering implements. Structure is not magic—structure is the direct perception that dharma-nature is naturally so, awaiting only that contemplation keep up.
The Practice: The Four Layers of a Single Stick of Incense
Now we enter the body.
This chapter corresponds to Samantabhadra's third vow—making extensive offerings. The final fascicle of the Samantabhadra Vow Chapter unfolds this vow in two sections. First comes phenomenal offering: clouds of flowers, clouds of garlands, clouds of heavenly music, clouds of heavenly parasols, clouds of heavenly garments, all kinds of heavenly incense, smearing incense, burning incense, powdered incense, and all kinds of lamps. Then comes Dharma-offering:
Among all offerings, the Dharma-offering is supreme. Namely: the offering of practicing as taught, the offering of benefiting sentient beings, the offering of embracing sentient beings, the offering of taking on the suffering of sentient beings, the offering of diligently cultivating wholesome roots, the offering of not abandoning the bodhisattva's task, the offering of not departing from bodhicitta.
The line "Among all offerings, the Dharma-offering is supreme" will be addressed at the end of this section. First, the single stick of incense.
To light a stick of incense, the simplest of all offering actions, is—under the contemplation of the four dharmadhātus—to establish four layers at once.
Phenomenal offering (the layer of the dharma-realm of phenomena). The hand brushes across the form of the incense, the match strikes and lights it, you watch the smoke rise, you plant the incense in the censer. The focus of contemplation is the concrete existence of this very stick of incense—its materiality, its visibility, its countability. One stick is one stick; three sticks are three sticks.
The normativity of phenomenal offering lies precisely in its concreteness. It pulls the practitioner's mind down from the abstract layer of thought back to the concrete layer of action. If you only think in your heart "I make offering to the Buddha" without any concrete action, you have not yet reached the layer of phenomenal offering—this is only an intention. Intention may be an inner condition of offering, but it cannot replace the material vehicle of offering. The Avataṃsaka does not abolish the materiality of phenomenal offering on the grounds that "all is empty." Phenomenal offering is one face of the dharma-realm, not its outer husk.
Principle-offering (the layer of the dharma-realm of principle). The same act of lighting a stick of incense. But this time the focus of contemplation is not the concrete existence of the offering implement; it is the absence of self-nature in the offerer (myself), the offered-to (the Buddha), and the act of offering (the lighting).
The "I" who offers is an aggregation of the five aggregates, without self-nature—this "I" is not an independent substance but a temporary collection of form, sensation, perception, formations, and consciousness. The "Buddha" who is offered to is the dharmakāya pervading everywhere, without particular characteristic—this "Buddha" is not an object located somewhere but the totality of the dharma-realm. The act of offering is dependently arisen, without substance—"lighting" is a dependent collection of hand, fire, incense, and air, with no independent "lighting" entity. All three are empty. This is principle-offering—what the Diamond Sūtra calls "the threefold purity of the donor, the recipient, and the gift."
But principle-offering is not "not doing phenomenal offering." The hand still has to grasp that very stick of incense, still has to strike the match, still has to plant it. None of the material actions is reduced; what is reduced is only the illusion that "I think I am doing some substantially existent thing." If principle-offering is read as "I do not need to do phenomenal offering since everything is empty," one has fallen into the grasping misreading of emptiness—the very direction against which Part Two and Part Five repeatedly warn.
The offering of unobstructed principle-and-phenomena (the layer of that dharma-realm). The same act of lighting a stick of incense. The focus of contemplation is the simultaneous, mutually unobstructed standing of the phenomenal character and the emptiness of this very stick of incense—the fragrance of the incense, the shape of the smoke, the physical process of combustion, the sense of presence of offerer and offered-to, all of these phenomenal characters are present; and at the same time the absence of self-nature in these phenomenal characters is also fully present.
You do not need to switch back and forth between "seeing the incense" and "contemplating emptiness"—in this single instant they are simultaneously established. The very moment of seeing the incense is the very moment of contemplating emptiness; the very moment of contemplating emptiness is the very moment of seeing the incense. The word "is" does not denote a temporal simultaneity; it denotes a structural non-duality.
This is the most direct embodied realization of the Heart Sūtra's "form is emptiness, emptiness is form." The Heart Sūtra stops here—this layer of offering is already ultimate.
The offering of unobstructed phenomena-and-phenomena (the layer of that dharma-realm). The same act of lighting a stick of incense. The focus of contemplation is that this very stick of incense, within the relations of unobstructed phenomena-and-phenomena, is mutually identical with all offering implements—that the entire structure of flowers, lamps, water, fruit, and immeasurable offering implements is simultaneously present within this stick of incense.
Chengguan, in his Commentary on the Avataṃsaka Sūtra, has three plain statements about this layer:
Offering implements are themselves the substance of the dharma-realm. Each individual offering implement accords with truth. Offering implements and the like all penetrate to the unobstructed phenomena-and-phenomena.
A stick of incense is the substance of the dharma-realm; a stick of incense accords with suchness; a stick of incense penetrates unobstructed phenomena-and-phenomena. This is the most concise installation, at the doctrinal level, of the offering of unobstructed phenomena-and-phenomena.
The Dharma-Offering Is Supreme
Looking back from the layer of the offering of unobstructed phenomena-and-phenomena at the line "Among all offerings, the Dharma-offering is supreme," one understands—
The "supreme" of the Dharma-offering is not the highest position in a ranking; it is a difference of fundamentally different kind.
"Supreme" means "most thoroughly realizing mutual identity," not "twice as much as the others." The Dharma-offering is the simultaneous presence of phenomenal offering (the necessary concrete action) + principle-offering (the threefold purity of donor, recipient, and gift) + the offering of unobstructed principle-and-phenomena (the simultaneous standing of phenomenal character and emptiness) + the offering of unobstructed phenomena-and-phenomena (mutual identity with all offerings). It is not a fifth kind of offering implement; it is the perfect completion of the previous four layers.
Samantabhadra's seven kinds of Dharma-offering—practicing as taught, benefiting sentient beings, embracing sentient beings, taking on the suffering of sentient beings, diligently cultivating wholesome roots, not abandoning the bodhisattva's task, not departing from bodhicitta—are each a concrete unfolding of unobstructed phenomena-and-phenomena. In the offering act of "practicing as taught," the offering act is itself the object being offered (the Buddha-Dharma); offerer and offered are mutually identical in this very act. In the offering act of "benefiting sentient beings," the sentient beings being benefited and the Buddha being offered to are mutually identical at the level of "sentient beings are precisely buddhas." In the offering act of "not departing from bodhicitta," the offering mind itself is mutually identical with the bodhi being offered to.
Not one of the seven kinds of Dharma-offering says "buy more, buy more expensive, buy more lavish offering implements." Every one of them is an act of practice. This is no accident—the Dharma-offering is structurally not a stacking-up of material, but a round fusion of structure.
Simultaneous, Not Sequential
One last key point must be made clear: the four layers are not a sequence of actions practiced over four separate days; they are four contemplative angles upon a single act, all simultaneously established.
The moment you light a stick of incense, phenomenal offering, principle-offering, the offering of unobstructed principle-and-phenomena, and the offering of unobstructed phenomena-and-phenomena are simultaneously present—it is only that your contemplation may rest at one or another layer. The "layered unfolding" of the four dharmadhātus is a sequence of exposition, not a ladder of practice. The cultivation of the perfect teaching is never a stepwise advance such as "first do phenomenal offering for a while, then upgrade to principle-offering."
The only difference is whether contemplation keeps up. If contemplation rests at the dharma-realm of phenomena, only phenomenal offering is seen. If contemplation enters the dharma-realm of principle, phenomenal offering is seen as also being principle-offering. If contemplation enters the dharma-realm of unobstructed principle-and-phenomena, phenomenal offering and principle-offering are seen as also being the offering of unobstructed principle-and-phenomena. If contemplation enters the dharma-realm of unobstructed phenomena-and-phenomena, all four layers are seen as simultaneously present in this single stick of incense. But regardless of where contemplation rests, the stick of incense itself is constituted by the simultaneous standing of all four layers—its unobstructed phenomena-and-phenomena does not wait for the practitioner's contemplation in order to appear; it is the naturally-so structure that is originally there.
The practitioner's task is not to upgrade this stick of incense into unobstructed phenomena-and-phenomena; it is to allow one's own contemplation to keep up with the unobstructed phenomena-and-phenomena structure that this stick of incense already is.
A Practice Pointer
The next time you light incense, linger one extra second. After joining your palms, in the few seconds from striking the match to planting the incense in the censer, ask yourself one question:
Is this stick of incense phenomenal offering? Principle-offering? The offering of unobstructed principle-and-phenomena? Or the offering of unobstructed phenomena-and-phenomena?
The question is not asking you to pick an answer. It is meant to make you notice—these four contemplative angles are originally established at once in this single stick of incense; the only question is whether contemplation can keep up.
⚠️ One more reminder. The "extensive" of making extensive offerings is not "many" in the sense of quantity. One flower is not enough, so make it ten; ten is not enough, so make it a hundred; the more expensive the better, the more numerous the better—all of these readings take "extensive" to mean quantity. The "extensive" of making extensive offerings is round fusion at the level of structure: a single stick of incense, offered with the contemplation of round fusion, is fully equipped with all offering implements; ten thousand sticks of incense, offered with a contemplation of separation, remain merely ten thousand separate sticks of incense.
The progression from phenomenal offering to Dharma-offering does not lie in the number or price of the offering implements; it lies in the depth of the inner grammar.
A common inner obstacle is this: "I do not have money to buy expensive offering implements—will my offering have no merit?" The response of making extensive offerings is: the merit of an offering lies not in the price of the offering implement but in the depth of according with nature. An elderly person who, with a cup of plain water from home, a flower picked from the courtyard, and the most ordinary stick of incense, makes an offering sincerely and in accordance with nature—this offering, under the structure of unobstructed phenomena-and-phenomena, is no different from the most lavish offering. For unobstructed phenomena-and-phenomena was never a comparison of material; it is the according-with-nature of structure.
Drawing to a Close
This chapter ends here.
The Heart Sūtra pierces through form and emptiness. The Avataṃsaka pierces through form and form. The four dharmadhātus are not four independent worlds; they are four contemplative angles upon one and the same dharma-realm. Unobstructed phenomena-and-phenomena is not a transcendence of the dharma-realm of phenomena; it is the simultaneous self-display of the dharma-realm of phenomena. A stick of incense, in this very moment, is unobstructed phenomena-and-phenomena—this is not a goal you have to reach; it is the naturally-so structure that is originally there.
Suchness, the original awareness, is complete within this single stick of incense.
The next chapter will move to a deeper question—since the dharma-realm is by nature unobstructed phenomena-and-phenomena, and since a stick of incense in this very moment already is fully equipped with all things, then why do you feel that there is a layer separating you from this naturalness? What is that layer? How is it to be handled? This is what the vow of repenting karmic obstacles is meant to address. Chapter Four takes "the gate of the simultaneous establishment of the concealed and the revealed" as its window, and looks at repentance as the entrance to "nature-arising"—not a mourning self-punishment, but a letting of the Buddha-nature that is already there emerge from beneath the karmic obstacles.
Every chapter in this series stops somewhere. The place where it stops is not an oversight; it is an act of reverence. A three-dimensional pen cannot write all the way to a ten-dimensional object; all it can do is mark clearly the place where the pen is set down—so that the reader knows that, beyond this line, one must rely on one's own Dharma-eye.
The pen of this chapter stops here.