Tissametteyyasuttaniddesa

Suttapiṭaka · Khuddakanikāya · Mahāniddesa · Vol. 29 · Section 230

[230] (Metteyya, said the Blessed One,) For one given over to sexual intercourse (methuna), even the teaching is forgotten, and he practices wrongly — this in him is ignoble.

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.