Leviticus 15:4-6

Living Bible

⁴ Any bed he lies on and anything he sits on is contaminated: ⁵ so anyone touching the man’s bed is ceremonially defiled until evening, and must wash his clothes and bathe himself. ⁶ Anyone sitting on a seat the man has sat upon while defiled is himself ceremonially impure until evening, and must wash his clothes and bathe himself.