The man who commits adultery with another man’s wife, he who commits adultery with his neighbor’s wife, the adulterer and the adulteress, shall surely be put to death. The man who lies with his father’s wife has uncovered his father’s nakedness; both of them shall surely be put to death. Their blood shall be upon them. If a man lies with his daughter-in-law, both of them shall surely be put to death. They have committed perversion. Their blood shall be upon them. — Leviticus 20:10-12, NKJV

If a man is found lying with a woman married to a husband, then both of them shall die—the man that lay with the woman, and the woman; so you shall put away the evil from Israel. If a young woman who is a virgin is betrothed to a husband, and a man finds her in the city and lies with her, then you shall bring them both out to the gate of that city, and you shall stone them to death with stones, the young woman because she did not cry out in the city, and the man because he humbled his neighbor’s wife; so you shall put away the evil from among you. — Deuteronomy 22:22-24, NKJV