Leviticus 15:2-4

2Speak to the children of Israel, and say to them, When any man hath a running issue out of his flesh, because of his issue he is unclean.1

3And this shall be his uncleanness in his issue: whether his flesh shall run with his issue, or his flesh be stopped from his issue, it is his uncleanness.

4Every bed, on which he lieth that hath the issue, is unclean: and every thing, on which he sitteth, shall be unclean.2