Tapanīyasutta
“Tapanīyañca vo, bhikkhave, dhammaṁ desessāmi atapanīyañca. Taṁ suṇātha …pe… katamo ca, bhikkhave, tapanīyo dhammo? Pāṇātipāto …pe… micchādiṭṭhi— ayaṁ vuccati, bhikkhave, tapanīyo dhammo.
Mortifying
“I will teach you the mortifying principle and the unmortifying. … And what is the mortifying principle? Killing living creatures … wrong view. This is called the mortifying principle.