Part Four · The Anāgāmin · Crossing the Realm, and After

By the ledger of the last part, this station looks like routine bookkeeping: six grades of nine severed; sever the remaining three and be done. If subtraction were mere counting, this part would have nothing to say—three more lamps to put out.

But here the canon says something neither earlier fruit was told: no return to this world.

The stream-enterer does not fall to the lower destinies; the once-returner comes back once—the number of rebirths is bounded, but the person still returns to the desire realm. The non-returner does not come back. From "how many times remain" to "no longer here" is not the extension of a number line; it is a change of realm. At this station, for the first time, the subtraction tears through not a brick within the wall, but the wall of a realm itself.

Part Four has two chapters. Chapter one watches how the change of kind happens: why severing the sixth grade only shortens the journey by returns, while severing the ninth puts one outside the realm—why the last lamp's going out is not merely one shade less of dark. Its opening scene is at Nālanda village in Magadha: a wanderer, an old friend of Sāriputta's, asks him forty rounds of questions—and asks his way to this station's epithet: coolness. Chapter two looks at what comes after the crossing: where does the non-returner go? The sutta's answer is the Pure Abodes; and the manner of arriving at nibbāna there, the canon divides with great care—five kinds of final nibbāna. One severance, five gaits: a deep property of subtraction hides here.

One chapter for the threshold; one for what lies past it. Go in.