اَللَّاوِيِّينَ 18:15

عَوْرَةَ كَنَّتِكَ لَا تَكْشِفْ. إِنَّهَا ٱمْرَأَةُ ٱبْنِكَ. لَا تَكْشِفْ عَوْرَتَهَا.

Thou shalt not uncover the nakedness of thy daughter in law: she is thy son’s wife; thou shalt not uncover her nakedness.