8.1.4 Dutiyauposathasutta

Sāvatthinidānaṃ. Atha kho aññataro bhikkhu yena bhagavā…pe…  ekamantaṃ nisinno kho so bhikkhu bhagavantaṃ etadavoca—

“ko nu kho, bhante, hetu, ko paccayo, yena midhekacce jalābujā nāgā uposathaṃ upavasanti vossaṭṭhakāyā ca bhavantī”ti? (Sabbaṃ vitthāretabbaṃ.) “Ayaṃ kho, bhikkhu, hetu, ayaṃ paccayo, yena midhekacce jalābujā nāgā uposathaṃ upavasanti vossaṭṭhakāyā ca bhavantī”ti.

Catutthaṃ.