Deuteronomy 22:22, 24

If a man is found having sexual relations with another man’s wife, both the woman and the man who had sexual relations with her must die. Get rid of this evil from Israel.

you must take both of them to the city gate and put them to death by throwing stones at them. Kill the girl, because she was in a city and did not scream for help. And kill the man for having sexual relations with another man’s wife. You must get rid of the evil among you.