Leviticus 15:19-24

19When a woman has a discharge, and the discharge in her body is blood, she shall be in her menstrual impurity for seven days, and whoever touches her shall be unclean until the evening. 20 aAnd everything on which she lies during her menstrual impurity shall be unclean. Everything also on which she sits shall be unclean. 21And whoever touches her bed shall wash his clothes and bathe himself in water and be unclean until the evening. 22And whoever touches anything on which she sits shall wash his clothes and bathe himself in water and be unclean until the evening. 23Whether it is the bed or anything on which she sits, when he touches it he shall be unclean until the evening. 24And bif any man lies with her and her menstrual impurity comes upon him, he shall be unclean seven days, and every bed on which he lies shall be unclean.

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