Leviticus 15:19-30

And if a woman has a discharge, her [regular] discharge of blood of her body, she shall be in her impurity or separation for seven days, and whoever touches her shall be unclean until evening. And everything that she lies on in her separation shall be unclean; everything also that she sits on shall be unclean. And whoever touches her bed shall wash his clothes and bathe himself in water, and be unclean until evening. Whoever touches anything she sat on shall wash his clothes and bathe himself in water, and be unclean until evening. And if her flow has stained her bed or anything on which she sat, when he touches it, he shall be unclean until evening. And if any man lie with her and her impurity be upon him, he shall be unclean seven days; and every bed on which he lies shall be unclean. And if a woman has an issue of blood for many days, not during the time of her separation, or if she has a discharge beyond the time of her [regular] impurity, all the days of the issue of her uncleanness she shall be as in the days of her impurity; she shall be unclean. [Matt. 9:20.] Every bed on which she lies all the days of her discharge shall be as the bed of her impurity, and whatever she sits on shall be unclean, as in her impurity. And whoever touches those things shall be unclean, and shall wash his clothes and bathe himself in water, and be unclean until evening. But if she is cleansed of her discharge, then she shall wait seven days, and after that she shall be clean. And on the eighth day she shall take two turtledoves or two young pigeons and bring them to the priest at the door of the Tent of Meeting; He shall offer one for a sin offering and the other for a burnt offering; and he shall make atonement for her before the Lord for her unclean discharge.