Kollel Iyun Hadaf, Jerusalem
1) The Gemara asks whether a Poletes is Temei'ah because of sighting or because of touching.
(a) What are the three ramifications of this Sha'aleh?The Gemara assumes that logically, a Poletes ought to be Temei'ah because of touching.
(c) Why?2) The second Lashon connects the Sha'aleh to the Pasuk "Al Tigeshu el Ishah".
(a) What is the Sha'aleh according to this Lashon?3) The Beraisa lists a Yoledes together with a Nidah and a Zavah as being Metam'ah inside like outside.
(a) What is the problem with that?The Gemara explains that the Beraisa speaks when she went to Tovel and found the blood in the Beis ha'Chitzon on the way down to the Mikveh - like the case of Rebbi Zeira.
The Gemara asks on this why it should not be 'Tum'ah Belu'ah.
(b) Why should it be Tum'ah Belu'ah any more than a Nidah or a Zavah, who are Temei'os when they see blood in the Beis ha'Chitzon?4) The Gemara answers that they gave it the same Din as Nivlas Of Tahor.
(a) What does this mean?The Gemara then explains that it speaks when the blood not only *moved* to the Beis ha'Chitzon before the Tevilah, but when it actually emerged from the womb - after the Tevilah.
(c) What is the Chidush?
5) We have now established Rebbi Zeira (see above 3a).
(a) But our Kashya on the Beraisa (also in 3a) remains. Either the Yoledes is a Nidah or she is a Zavah. So why list her as a separate entity?Rava also holds like Rav Oshaya, that if a baby's head comes beyond the Perozdor, it is considered a birth.
(c) How do we know this - What made Rava rule that the baby had been born on Friday?6)
(a) What is the difference whether the womb is considered 'Tum'ah Belu'ah' or 'Tum'as Beis he'S'tarim'?Rava brings a proof from the Beraisa quoted above (41b), which expressly states, that although a Meshameshes should really be Tehorah, since her touching is 'Tum'as Beis ha'S'tarim', she is Temei'ah because of a 'Gezeiras Hakasuv'.
(b) How does Abaye (in whose opinion the womb is 'Tum'ah Belu'ah') explain that Beraisa?7) Rava holds that the location in the throat (the Beis ha'Beli'ah) where a Nivlas Of Tahor is Metamei the clothes a person is wearing, has the Din of a 'Beis ha'S'tarim'.
What is the difference whether the location in the throat where a Nivlas Of Tahor is Metamei is considered 'Belu'ah' or 'Beis ha'S'tarim'?
8) The Gemara wants to learn that the Neveilah of an animal should be Metamei be'Veis ha'Beli'ah from a bird.
(a) How does the Gemara first want to exclude it from the Din of a Nivlas Of Tahor - *before* it cites the Kal va'Chomer?9)
(a) Why should a Sheretz being carried under a person's arm-pit or in his folded elbow, not be Metamei the person who is carrying it, whilst a piece of Neveilah is?