Niddah

MISHNAH. IF A ZAB, A ZABAH, A MENSTRUANT, A WOMAN AFTER CHILDBIRTH OR A LEPER HAVE DIED [THEIR CORPSES] CONVEY UNCLEANNESS BY CARRIAGE  UNTIL THE FLESH HAS DECAYED. IF AN IDOLATER HAS DIED HE CONVEYS NO UNCLEANNESS.  BETH SHAMMAI RULED: ALL WOMEN DIE AS MENSTRUANTS;  BUT BETH HILLEL RULED: A WOMAN  CANNOT BE REGARDED AS A MENSTRUANT UNLESS SHE DIED WHILE SHE WAS IN MENSTRUATION. GEMARA. What is the meaning of BY CARRIAGE? If it be suggested: By actual carriage, [the objection would arise:] Does not in fact every corpse convey uncleanness by carriage?  — Rather say that BY CARRIAGE means  through a heavy  stone,  for  it is written, And a stone was brought, and laid  upon the mouth of the den.  What is the reason?  — Rab replied: This  is a preventive measure against the case where they  swoon.  One taught: In the name of R. Eliezer it was stated, This possibility must be taken into consideration until his stomach bursts. IF AN IDOLATER HAS DIED etc. It was taught: Rabbi stated, On what ground did they rule that if an idolater has died he conveys no uncleanness by carriage? Because his uncleanness when alive  is not Pentateuchal, but Rabbinical. Our Rabbis taught: Twelve questions did the Alexandrians address to R. Joshua b. Hananiah.  Three were of a scientific nature,  three were matters of aggada, three were mere nonsense and three were matters of conduct. 'Three were of a scientific nature': If a zab, a zabah, a menstruant, a woman after childbirth or a leper have died, how long do their corpses convey uncleanness by carriage? He replied: Until the flesh has decayed. Is the daughter of a woman that was divorced and remarried by her first husband  allowed to marry a priest? Do we say that this might be inferred a minori ad majus: If the son of a widow who was married to a High priest, who is not forbidden to all,  is nevertheless tainted,  how much more so the offspring of her  who is forbidden to all;  or is it possible to refute the argument, thus: The case of a widow married to a High Priest is different because she herself is profaned?  He replied: