Sāvatthinidānaṁ. Atha kho aññataro bhikkhu yena bhagavā …pe… ekamantaṁ nisinno kho so bhikkhu bhagavantaṁ etadavoca: “ko nu kho, bhante, hetu, ko paccayo, yena m’idhekacce jalābujā nāgā uposathaṁ upavasanti vossaṭṭhakāyā ca bhavantī”ti? (Sabbaṁ vitthāretabbaṁ.) “Ayaṁ kho, bhikkhu, hetu, ayaṁ paccayo, yena m’idhekacce jalābujā nāgā uposathaṁ upavasanti vossaṭṭhakāyā ca bhavantī”ti. Catutthaṁ.