Leviticus 15:24-27

²⁴If any man sleeps with her, and if her impure flow touches him, he will be unclean for seven days. Every bed on which he lies will be unclean.

²⁵If a woman has a flow of blood for many days that is not in the time of her menstruation, or if she has a flow beyond the time of her menstruation, during all the days of the flow of her uncleanness, she will be as if she were in the days of her period. She is unclean.

²⁶Every bed on which she lies all during her flow of blood will be to her just like the bed on which she lies during her menstruation, and everything on which she sits will be unclean, just like the uncleanness of her menstruation.

²⁷Whoever touches any of those things will be unclean; he must wash his clothes and bathe himself in water, and he will be unclean until evening.