Mbh 12.165.1i

He who becomes unable to bear in his hand the yak-tail while practising this vow, should observe the vow of mendicancy (as stated above) for one whole year. Amongst men such expiation is the best. For those that are able to practise charity, the practice of charity has been laid down in all such cases. Those who have faith and virtue may cleanse themselves by giving away only one cow. One who eats or drinks the flesh, ordure, or urine, of a dog, a boar, a man, a cock, or a camel must have his investiture of the sacred thread re-performed. If a Soma-drinking Brahmana inhales the scent of alcohol from the mouth of one that has drunk it, he should drink warm water for three days or warm milk for the same period. Or, drinking warm water for three days he should live for that period upon air alone. These are the eternal injunctions laid down for the expiation of sin, especially for a Brahmana who has committed these sins through ignorance and want of judgment."'"