레위기 15:16 미슈나 참조: Mishnah Niddah & Mishnah Nazir

For a fetus born from its mother's side, she does not sit the prescribed days of uncleanness nor the days of cleanness, nor does one incur on its account the obligation to bring a sacrifice. Rabbi Shimon says: it is regarded as a regular birth. All women are subject to uncleanness [as soon as the blood appears] in the outer chamber, as it says, "her discharge being blood in her body" (Leviticus 15:19). But a zav and one who emitted semen convey no uncleanness unless the discharge came out of the body.

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.