Leviticus 15:22-25

²²And whoever toucheth any object that she sat upon shall wash his garments, and bathe in water, and be unclean until the even.

²³And if it be on the bed, or on anything whereon she sitteth, when he toucheth it, he shall be unclean until the even.

²⁴And if a man lie with her at all, and the uncleanness of her separation come upon him, he shall be unclean seven days; and every bed whereon he lieth shall be unclean.

²⁵And if a woman have her flux of blood many days out of the time of her separation, or if she have the flux beyond the time of her separation, all the days of the flux of her uncleanness shall she be as in the days of her separation: she is unclean.