Saṃyutta Nikāya 29

1. Nāgavagga

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.