Leviticus 15:11

If the man with the discharge touches anyone without first rinsing his hands with water, the one who was touched must wash his clothes and bathe with water, and he will be unclean until evening.

And whomsoever he toucheth that hath the issue, and hath not rinsed his hands in water, he shall wash his clothes, and bathe himself in water, and be unclean until the even.