משנה אויף ויקרא 15:33

Rabbi Akiva said: From where do we know that an idol defiles by being carried like a menstruant? Because it is said, “You shall cast them [the idols] away as a menstruous woman. Out! You will say to them” (Isaiah 30:22): just as a menstruant defiles by being carried, so does an idol defile by being carried.

Any matter of doubt regarding [leprous affliction] at the outset is clean before a decision is made [to declare it] unclean. Once a decision has been made [to declare it] unclean, any matter of doubt is regarded as unclean. A person suffering from gonorrhea (a is examined regarding seven things, before it has been decided that it is gonorrhea: With regard to food, drink, carrying things, jumping, sickness, something seen, or an impure thought. Once gonorrhea is established, he is no longer examined. [Any flux resulting] from an accident to him, doubtful [flux] and his semen are unclean, for there are grounds for this assumption. If a one strikes his fellow, and they expected him to die and he partially recovered and then grew worse and died [the other] is liable [for murder]. Rabbi Nehemiah exempts him, for there are grounds for this assumption.