You must not have sexual relations with your daughter-in-law. She is your son’s wife; you are not to have sexual relations with her.
Leviticus 18:15
וַיִּקְרָא 18:15
וַיִּקְרָא 18:15
You must not have sexual relations with your daughter-in-law. She is your son’s wife; you are not to have sexual relations with her.