Leviticus 15:2-4

2“Speak to the Israelites and tell them, ‘When any man has a discharge from his body, his discharge is unclean.

3Now this is his uncleanness in regard to his discharge – whether his body secretes his discharge or blocks his discharge, he is unclean. All the days that his body has a discharge or his body blocks his discharge, this is his uncleanness.

4“‘Any bed the man with a discharge lies on will be unclean, and any furniture he sits on will be unclean.