Leviticus 15:33 WEB

³¹  ''Thus you shall separate the children of Israel from their uncleanness, so they will not die in their uncleanness, when they defile my tabernacle that is in their midst.''

³²  This is the law of him who has a discharge, and of him who has an emission of semen, so that he is unclean thereby;

³³  and of her who has her period, and of a man or woman who has a discharge, and of him who lies with her who is unclean.