Leviticus 15:17-19

New International Version - UK

¹⁷ Any clothing or leather that has semen on it must be washed with water, and it will be unclean till evening. ¹⁸ When a man has sexual relations with a woman and there is an emission of semen, both of them must bathe with water, and they will be unclean till evening.

¹⁹ ‘“When a woman has her regular flow of blood, the impurity of her monthly period will last seven days, and anyone who touches her will be unclean till evening.