Leviticus 15:2

A running issue A grievous and loathsome disease, and generally the consequence of sin. Such a one was in a state of uncleanness all the time it was upon him. “If it proceeded merely from innocent, accidental causes,” says Maimonides, “as a strain in the back, carrying too great a burden, or violent leaping, the man was not defiled with it, nor concerned in this law.”