Leviticus 15:22-24

New International Version

²² Anyone who touches anything she sits on will be unclean; they must wash their clothes and bathe with water, and they will be unclean till evening. ²³ Whether it is the bed or anything she was sitting on, when anyone touches it, they will be unclean till evening.

²⁴ “‘If a man has sexual relations with her and her monthly flow^(A) touches him, he will be unclean for seven days; any bed he lies on will be unclean.