Pemasutta 11.2

11.2

Idha, bhikkhave, bhikkhu akkosantaṃ paccakkosati, rosantaṃ paṭirosati, bhaṇḍantaṃ paṭibhaṇḍati.

It’s when someone abuses, annoys, or argues with a mendicant, and the mendicant abuses, annoys, or argues back at them.