Leviticus 20:18
If a man has intercourse with a woman during her monthly period, both of them are to be driven out of the community, because they have broken the regulations about ritual uncleanness.
Leviticus 15:24
If a man has sexual intercourse with her while she has her period, he will be unclean for seven days. Any bed he lies on will become unclean.
Leviticus 18:19
Never have sexual intercourse with a woman while she is unclean during her monthly period.
Ezekiel 18:6
and does not eat at the mountain shrines or lift up his eyes to the idols of the house of Israel, or defile his neighbor's wife or approach a woman during her menstrual period;
Ezekiel 22:10
Some of them sleep with their father's wife. Some force women to have intercourse with them during their period.