Leviticus 15:3-5

Amplified Bible

³ This shall be [the law concerning] his uncleanness in his discharge: whether his body allows its discharge to flow or obstructs its flow; it is uncleanness in him. 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;