Leviticus 15:16-19

‘Now if any man has a seminal emission, he shall wash all his body in water, and be unclean until evening. Every garment and every leather on which there is semen shall be washed with water, and shall 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 bodily discharge is blood, she shall continue in her menstrual impurity for seven days; and whoever touches her shall be unclean until evening.