Leviticus 15:31-33

31“‘Thus you are to set the Israelites apart from their impurity so that they do not die in their impurity by defiling my tabernacle which is in their midst.

32This is the law of the one with a discharge: the one who has a seminal emission and becomes unclean by it,

33the one who is sick in her menstruation, the one with a discharge, whether male or female, and a man who has sexual intercourse with an unclean woman.’”