Leviticus 15:23-25

Amplified Bible

²³ And if it is on her bed or on the thing on which she is sitting, when he touches it, he shall be unclean until evening. ²⁴ If a man actually lies with her so that her menstrual impurity is on him, he shall be unclean for seven days; and every bed on which he lies shall be unclean.

²⁵ ‘Now if a woman has a flow of blood for many days, not during the time of her menstruation, or if she has a discharge beyond that period, as long as the impure discharge continues she shall be as she is in the days of her [normal] menstrual impurity; she is unclean.^(A)