Leviticus 15:5, 10-11

And whoever touches his bed shall wash his clothes and bathe in water, and be unclean until evening.

Whoever touches anything that was under him shall be unclean until evening. He who carries any of those things shall wash his clothes and bathe in water, and be unclean until evening. And whomever the one who has the discharge touches, and has not rinsed his hands in water, he shall wash his clothes and bathe in water, and be unclean until evening.