ل ا تُعاشِرِ امْرَأتَكَ فِي فَترَةِ حَيضِها الشَّهرِيَّةِ إذْ تَكُونُ نَجِسَةً.
And thou shalt not approach unto a woman to uncover her nakedness, as long as she is impure by her uncleanness.