Sekhiyakaṇḍa

Vinayapiṭaka · Parivāra · Vol. 8 · Section 429

[429] Out of disrespect, speaking with the mouth full of food, one commits one offence (āpatti): an offence of wrong-doing (dukkaṭa).

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.

This passage also appears in 5 other places