Leviticus 20:10
If a man commits adultery with another man’s wife—with the wife of his neighbor—both the adulterer and the adulteress must surely be put to death.
Berean Standard Bible
And the man that committeth adultery with another man’s wife, even he that committeth adultery with his neighbour’s wife, the adulterer and the adulteress shall surely be put to death.
“‘The man who commits adultery with another man’s wife, even he who commits adultery with his neighbor’s wife, the adulterer and the adulteress shall surely be put to death.