Leviticus 12:2
"Say to the Israelites, 'A woman who becomes pregnant and gives birth to a son will be unclean for seven days, as she is during the days of her menstruation.

Leviticus 15:25
When 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.

Leviticus 15:27
Anyone who touches these things will be unclean; he must wash his clothes and bathe with water, and he will be unclean until evening.