The Law Code of Devala 7.8: Keśavavaijayantī · Prāyaścitta · Smṛtiviveka

7.8

tīrthe puṇyatame yathāvad dehanyāsād brāhmaṇo mahāpātakān mucyate | dharmayuddhe gograhe grāmaghātādiṣu prāṇatyāgāt pūyate kṣatriyaḥ śastropajīvinaś ca

If what is undrinkable has been drunk, and what is inedible has been eaten, / and intercourse with an illicit woman has been performed by a Brahmin carried off by Mlecchas,

A Brahmin is freed from grave sins by duly laying down his body at a most holy ford; a Kṣatriya and those who live by arms are purified by giving their lives in a righteous battle, in a cattle-raid or when a village is being destroyed.