Ādittapariyāyasutta

sn35.235:11.1 Forget mutilating the body faculty with a sharp spear, burning, blazing, and glowing!

sn35.235:11.2 I’d better focus on the fact that

sn35.235:11.3 the body, touches, body consciousness, and body contact are impermanent. And the painful, pleasant, or neutral feeling that arises dependent on body contact is also impermanent.