Ovādavagga

Vinayapiṭaka · Parivāra · Vol. 8 · Section 319

[319] A bhikkhu who, knowing, eats almsfood (piṇḍapāta) procured through the prompting of a bhikkhunī commits two offenses (āpatti): he accepts it thinking, "I shall eat it" — an offense of wrong-doing (dukkaṭa); and for every mouthful swallowed — an offense of expiation (pācittiya).

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.

This passage also appears in 2 other places

Vol. 8 · Section 329 — Bhogajanavagga
Vol. 8 · Section 332 — Acelakavagga