Leviticus 15:22-25

²²Anyone who touches something that she has been sitting on, a bed or anything else, must wash his clothes, and no one should touch that person until that evening.

²⁴If a man has sex with a woman during that time and some of the menstrual blood touches him, no one should touch him for seven days, and no one should touch the bed that he lies on.

²⁵When a woman has a vaginal discharge of blood for ◄many days/a long time►, which is not her monthly flow of blood, or if her flow of blood continues after her monthly flow ends, no one should touch her until it stops.