Deuteronomy 22:21-22

21then they shall bring the girl out to the doorway of her father’s house, and the men of her city shall stone her 1to death, because she has 2committed a disgraceful sin in Israel by playing the prostitute in her father’s house; so 3you shall eliminate the evil from among you.

22“4If a man is found sleeping with a married woman, then both of them shall die, the man who slept with the woman, and the woman; so you shall eliminate the evil from Israel.