Leviticus 15:26-28

Living Bible

²⁶ so that anything she lies upon during that time is defiled, just as it would be during her normal menstrual period, and everything she sits on is in a similar state of defilement. ²⁷ Anyone touching her bed or anything she sits on shall be defiled, and shall wash his clothes and bathe and be defiled until evening. ²⁸ Seven days after the menstruating stops, she is no longer ceremonially defiled.