Leviticus 15:22-25

²²And whosoever toucheth any thing that she sitteth upon shall wash his clothes, and bathe himself in water, and be unclean until the even.

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

²⁴And if any man lie with her, and her impurity be upon him, he shall be unclean seven days; and every bed whereon he lieth shall be unclean.

²⁵And if a woman have an issue of her blood many days not in the time of her impurity, or if she have an issue beyond the time of her impurity; all the days of the issue of her uncleanness she shall be as in the days of her impurity: she is unclean.