Leviticus 18:20
“‘You shall not lie carnally with your neighbor’s wife, and defile yourself with her.
World English Bible (Public Domain)
In context
Before · Leviticus 18:18–19
18“‘You shall not take a wife in addition to her sister, to be a rival, to uncover her nakedness, while her sister is still alive. 19“‘You shall not approach a woman to uncover her nakedness, as long as she is impure by her uncleanness.
20“‘You shall not lie carnally with your neighbor’s wife, and defile yourself with her.