Sekhiyakaṇḍa

Vinayapiṭaka · Parivāra · Vol. 8 · Section 432

[432] Out of disrespect, eating while stuffing the cheeks, one commits one offence (āpatti): a dukkaṭa.

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.

This passage also appears in 5 other places