Saṃyutta Nikāya 29
1. Nāgavagga
8. Dutiyasutasutta
Sāvatthinidānaṃ. Ekamantaṃ nisinno kho so bhikkhu bhagavantaṃ etadavoca: “ko nu kho, bhante, hetu, ko paccayo, yena midhekacco kāyassa bhedā paraṃ maraṇā jalābujānaṃ nāgānaṃ sahabyataṃ upapajjatī”ti? … pe … Ayaṃ kho, bhikkhu, hetu, ayaṃ paccayo, yena midhekacco kāyassa bhedā paraṃ maraṇā jalābujānaṃ nāgānaṃ sahabyataṃ upapajjatī”ti.
Aṭṭhamaṃ.