Leviticus 15:24-27

²⁴If a man sleeps with her and the blood from her period touches him, he will be unclean for seven days, and any bed he lies on will be unclean.

²⁵When a woman has a discharge of blood for several days when it's not the time for her period, or if it continues past her period, she will be unclean for the whole time she is bleeding, not just for the days of her period.

²⁶Any bed she lies on or anything she sits on while she has her discharge will be unclean, just as her bed is during her period.

²⁷Anyone who touches them has to wash their clothes, and wash themselves with water, and they will be unclean until the evening.