Silavantasutta 3.3

3.3

Ṭhānaṃ kho panetaṃ, āvuso, vijjati yaṃ sakadāgāmī bhikkhu ime pañcupādānakkhandhe aniccato …pe… anattato yoniso manasi karonto anāgāmiphalaṃ sacchikareyyā”ti.

It’s possible that a mendicant once-returner who rationally applies the mind to the five grasping aggregates will realize the fruit of non-return.”