Deuteronomy 22:23–24

23 If there is a young woman who is a virgin engaged to a man, and another man encounters her in the city and sleeps with her, 24 take the two of them out to the gate of that city and stone them to death—the young woman because she did not cry out in the city and the man because he has violated his neighbor’s fiancée. You must purge the evil from you.