Angirasasmriti 2.11: ekādaśo 'dhyāyaḥ

Involved in a minor sin, a cow-killer should eat barley gruel; / his food shall be free of alkali and salt, coarse, at the sixth mealtime.

Having shaved his hair, covered with that hide in the forest or in a cowpen, / bathing and anointing with cow urine is prescribed for two months.

The act of washing his feet must be done; he should do it with water alone; / like an observer of vows, he should hold a staff and wear a girdle with mantras.

He should constantly follow cows, and always swallow their dust; / he should stand when they stand, and follow when they walk.

Having served them and bowed down, he should spend the night in the hero's posture; / and the wise man should mutter the Gomatī hymn, the syllable Oṃ, and the Veda.

Afflicted, or accused, or endangered by thieves, tigers, and other perils, / fallen or stuck in mud, he should free [her] with all his strength.

In heat, when it rains, in cold, or when the wind blows violently, / he should not protect himself without having protected the cow according to his ability.

Whether in his own or others' house, field, or threshing floor, / he should not announce [a cow] that is eating, nor a calf that is drinking.

The cow-killer who follows cows according to this rule / is freed from the sin consisting of cow-slaughter; of this there is no doubt.

Having well performed the observance, he should give eleven cows with a bull; / if [they are] not available, he should offer all his possessions to those learned in the Veda.

This sacred penance, which destroys minor sins, / was prescribed by Aṅgiras himself for those who know religious duty and are versed in the Veda.

Thus ends the eleventh chapter, entitled “Expiation for Cow-Slaughter,” in the Treatise on Religious Duty of Aṅgiras.