Garudapurana 1.52.5

1.52.5

dattvā cānnaṃ ca viduṣe brahmahatyāṃ vyapohati /
aśvamedhāvabhṛthake snātvā vā mucyate dvijaḥ //

And by giving food to a learned man, he expels the sin of slaying a brāhmaṇa. / Or, having bathed at the final ablution of a horse sacrifice, a twice-born is freed;