Deuteronomy 22:23-24

23“1If there is a girl who is a virgin 2betrothed to a man, and another man finds her in the city and sleeps with her, 24then you shall bring them both out to the gate of that city and you shall stone them 3to death: the girl, because she did not cry out for help though she was in the city, and the man, because he has violated his neighbor’s wife. So you shall eliminate the evil from among you.