Leviticus 15:16-19

‘Now if a man has a seminal emission, he shall bathe all his body in water and be unclean until evening. As for any garment or any leather on which there is seminal emission, it shall be washed with water and be unclean until evening. If a man lies with a woman so that there is a seminal emission, they shall both bathe in water and be unclean until evening. ‘When a woman has a discharge, if her discharge in her body is blood, she shall continue in her menstrual impurity for seven days; and whoever touches her shall be unclean until evening.