Leviticus 15:25-27

‘Now if a woman has a discharge of her blood many days, not at the period of her menstrual impurity, or if she has a discharge beyond that period, all the days of her impure discharge she shall continue as though in her menstrual impurity; she is unclean. Any bed on which she lies all the days of her discharge shall be to her like her bed at menstruation; and every thing on which she sits shall be unclean, like her uncleanness at that time. Likewise, whoever touches them shall be unclean and shall wash his clothes and bathe in water and be unclean until evening.