Leviticus 15:25-26

25When a woman has a discharge of her blood for many days at a time other than her menstrual period, or if it continues beyond her period, she will be unclean all the days of her unclean discharge, just as she is during the days of her menstruation. 26Any bed on which she lies or any furniture on which she sits during the days of her discharge will be unclean, like her bed during her menstrual period.