Leviticus 15:23-25

New Revised Standard Version, Anglicised Catholic Edition

²³ whether it is the bed or anything upon which she sits, when he touches it he shall be unclean until the evening. ²⁴ If any man lies with her, and her impurity falls on him, he shall be unclean for seven days; and every bed on which he lies shall be unclean.

²⁵ If a woman has a discharge of blood for many days, not at the time of her impurity, or if she has a discharge beyond the time of her impurity, for all the days of the discharge she shall continue in uncleanness; as in the days of her impurity, she shall be unclean.