The Tipiṭaka in Three Languages

Mahāvaggavagga › Parihānikathā

Abhidhammapiṭaka · Kathāvatthu · Vol. 37 · Section 219

[219] S. The Once-Returner (sakadāgāmī) has seen suffering (dukkha) … has seen the four truths; does the Once-Returner not fall away from the fruition of once-returning (sakadāgāmiphala)? P. Yes. S. The Arahant (arahā) has seen the four truths; does the Arahant not fall away from arahantship (arahatta)? 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English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.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