Leviticus 15:2-3

15:2 Speak unto the children of Israel, and say unto them, When any man hath a running issue out of his flesh, [because of] his issue he [is] unclean. 15:3 And this shall be his uncleanness in his issue: whether his flesh run with his issue, or his flesh be stopped from his issue, it [is] his uncleanness.