EN
At Sāvatthī. Seated to one side, that mendicant said to the Buddha: “Sir, what is the cause, what is the reason why some moisture-born dragons keep the sabbath, having transformed their bodies?” (Tell all in full.)
PL
Sāvatthinidānaṁ. Ekamantaṁ nisinno kho so bhikkhu bhagavantaṁ etadavoca: “ko nu kho, bhante, hetu, ko paccayo, yena m’idhekacce saṁsedajā nāgā uposathaṁ upavasanti vossaṭṭhakāyā ca bhavantī”ti? (Sabbaṁ vitthāretabbaṁ.)
Sutraya