金剛經纂要刊定記 4.326

4.326

不來果。經問答徵意，亦同上釋。意云阿那含者，一往天上更不再來，雖爾不來亦無不來之者，但約此義，名阿那含。不來不還，蓋是一義。

The fruit of non-returning. The sūtra's questions, answers, and inquiry purport are also the same as explained above. The intention means that an anāgāmin goes once to heaven and never comes again; even though they thus do not come, there is also no one who does not come; merely in terms of this meaning are they called an anāgāmin. Non-coming and non-returning are fundamentally one meaning.