MahāvaggavaggaParihānikathā

Abhidhammapiṭaka · Kathāvatthu · Vol. 37 · Section 194

[194] S. Does the Non-Returner (anāgāmī) fall away from the Fruition of Non-Returning (anāgāmi-phala)? P. Yes. S. Does the Stream-Enterer (sotāpanna) fall away from the Fruition of Stream-Entry (sotāpatti-phala)? P. It should not be said thus. … S. Does the Non-Returner fall away from the Fruition of Non-Returning? P. Yes. S. Does the Once-Returner (sakadāgāmī) fall away from the Fruition of Once-Returning (sakadāgāmi-phala)? P. It should not be said thus. …

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.

This passage also appears in 5 other places