Leviticus 20:10

10. The adulterer and the adulteress In the Mosaic law adultery is committed only through the unchastity of a wife. A husband commits this crime only with the free wife of another. See Exodus 20:14, note.

Put to death If the adulteress was another’s slave, the penalty was milder, probably corporeal punishment. The allowance of polygamy implies that the wife has no such exclusive right to the husband as the husband has to the wife. In many countries the adulteress has suffered capital punishment while the adulterer has escaped with a less penalty. Since this crime destroys the family, the corner-stone of society, it deserves the severest penalty. If both parties are married persons, the crime is double adultery; if but one is under marriage vows, it is single. See Exodus 20:14, note.