PārājikkaṇḍaPaṭhaṁpārājikasikkhābada

Vinayapiṭaka · Bhikkhu Vibhaṅga (1) · Vol. 1 · Section 64

[64] Now at that time a certain bhikkhu engaged in sexual intercourse (methunaṃ dhammaṃ) with a female nāga (nāgī). He was remorseful (kukkucca) … "Bhikkhu, you have committed an offense (āpatti) of pārājika." Now at that time a certain bhikkhu engaged in sexual intercourse with a female yakkha (yakkhinī) … engaged in sexual intercourse with a female peta (petī) … engaged in sexual intercourse with a paṇḍaka. He was remorseful … "Bhikkhu, you have committed an offense of pārājika."

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.

This passage also appears in 5 other places