Leviticus 15:4-6

Amplified Bible

⁴ Every bed on which the one who has the discharge lies becomes unclean, and everything on which he sits becomes unclean. ⁵ Whoever touches his bed shall wash his clothes, and bathe in water, and be unclean until evening; ⁶ and whoever sits on anything on which the man with the discharge has been sitting shall wash his clothes and bathe in water, and be unclean until evening.