1) TOSFOS DH ARBAIM YOM KODEM YETZIRAS HAVELAD

(SUMMARY: Tosfos explains that, Tefilah before the baby is formed can determine the gender of the baby, and can even obtain somebody elses Barshert, provided the betrothal has not yet taken place).

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(a) Clarification #1: Nevertheless, Tefilah helps within forty days to turn the fetus into a boy or a girl ...

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(b) Source: As we learned in Brachos Forty days before the formation of the baby, one can Daven that ones wife should give birth to a boy.

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(c) Clarification #2: And even ones first match can be switched through the medium of Tefilah ...

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(d) Source: As the Gemara says in Moed Katan Although one may not get married on Yom-Tov, betrothal is permitted, to pre-empt somebody else from getting her via Tefilah.

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2) TOSFOS DH VEEIMA LO LIRBU KLAL

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(a) Question: How does he then establish the Gezeirah-Shavah of Pera Pera?

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(b) Answer (Part 1): It therefore seems what the Gemara means is Let us say that they are not permitted to grow a thirty-day growth, which is the Shiur Pera, but that they are obligated to cut their hair on the twenty-ninth day.

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(c) Answer (Part 2): And the Gemara answers that had the Pasuk written Lo Yeshalchu Pera, it would indeed imply that they are not permitted to grow a thirty-day growth; But now that it writes Pera before Lo Yeshalechu, it implies that one may not allow more than Pera to grow.

3) TOSFOS DH ELA GEMARA GEMIRI LAH VEASA YECHEZKEL VEASMCHA AKERA

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(a) Question: By establishing the Hekesh of Yechezkel, Rav Ashi contradicts what he himself said earlier, that Kodshim with long hair do not invalidate the Avodah?

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(b) Answer (Part 1): Rav Ashis answer here (Gemara Gmiri ) actually answer both Kashyos - Until Yechezkel came - who said it? And the earlier Kashya that since it is a Halachah leMoshe miSinai, we can say that the Halachah was presented with regard to Misah, but not with regard to disqualifying the Avodah.

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(c) Answer (Part 2): And when Yechezkel supported the Halachah with a Pasuk, he did so with regard to the Halachah, with the result that we restrict the support from the Hekesh to the aspect of Misah exclusively.

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(d) Answer (Part 3): Whereas above, before we knew of the Halachah, we thought that the Hekesh from Perueven if to Shesuyei Yayin is total, based on the principle Ein Hekesh leMechtzah (There is no such thing as half a Hekesh).

4) TOSFOS DH KASOM YIKSMU

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(a) Clarification: Like spelt (Kusemes) which grows like that - the tip of one grain reaches the base of the next one.

HADRAN ALACH KOHEN GADOL

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