Leviticus 15:24

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

And if a woman have an issue of her blood many days out of the time of her separation, or if it run beyond the time of her separation; all the days of the issue of her uncleanness shall be as the days of her separation: she shall be unclean.