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Why are some masechtot names plural (e.g. gitin, kidushin) while others are singular (e.g. tomid, nida and shabos)?

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Isn't this a question on terminology in general? Those realms of halacha are known by the terms in singular and plural, respectively, for reasons which are probably explainable regardless of the masechta names. –  WAF Mar 5 '12 at 2:40
@WAF, Rambam has T'midin, but it's maseches Tamid. Likewise, Korban Pesach and P'sachim (which latter I've heard explained plural because it's so-called Pesach Rishon (chapter 1 through?? and 10) and so-called Pesach Sheni (chapters ??+1 through 9) IIRC) and probably others. –  msh210 Mar 5 '12 at 3:25
@msh210 I think it's 1-4,10 and 5-9; the former deals with the holiday and chametz and the latter deals with the korban issues. –  Double AA Mar 5 '12 at 3:44

1 Answer 1

I don't know about Nida and Shabbat, but as far as mesechet Taanit I heard a really interesting explanation.

I'm clearly not doing the explanation justice here, but in the Talmud Yerushalmi, Mesecht Taanit, is called mesechet Taniot. Because outside of Israel, you can not declare new fasts, and many of the fasts that were declared were optional based on historical circumstances. (i.e. Shmad) The Gemora in Taanit 11b or 12b says that "There are No communal fasts in Bavel save for Tisha B'Av" So in Bavel, only Tisha B'av was a fast which could be declared and kept on the public level for all generations, and so they renamed the messechet to Taanit, instead of Taaniot.

Ramban writes (as quoted in the Ran):

אין שם תענית ציבור בבבל אלא כל התעניות שמתענין בבבל אינן אלא כתענית יחיד. לפיכך אינו אסור בחומר תענות צבור. והטעם מפני שהדיינין שלהם הדיוטות הם ולא סמוכין ולא היה להם נשיא שתהא גזרתו קיימת על כל ישראל. לפיכך כשהצבור מקבלין תענית צריכין לקבל כולן על עצמן כיחידים שכל אחד מקבל על עצמו, ומשום הכי אינו חייב לנהוג בו אלא כתענית יחיד. אבל בארץ ישראל שהיה להם נשיא, לא היו צריכין לקבל על עצמן לפי שגזירתו קיימת על כולן וכולהו בתריה גרירי.‏

There are no communal fasts in Bavel; rather, all the fasts that they observe in Bavel are merely individual fasts. Therefore, they are not bound by the stringent prohibitions of a communal fast. And the reason is because their judges are laypeople and do not have semichah (rabbinical ordination)* and they did not have a nasi (president) whose decree would be valid for all Israel. Therefore, when the community accepts a fast, they all have to accept it upon themselves as indivduals, everyone accepting it upon him/herself, and because of this, they only have to behave as on an individual fast. But in the land of Israel where they had a nasi, they would not have to accept it upon themselves, because his decree is valid for all of them and they all follow him.

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Interesting, but can you source any of this? –  Double AA Mar 5 '12 at 7:33
I heard it in a gemora shiur talking about meschet Tananiot, I'll see if I can find it. –  avi Mar 5 '12 at 7:35
@DoubleAA Found the source ! Do I have to say a Shechianu now? –  avi Mar 5 '12 at 7:50
@msh210 what does rlm do? –  avi Mar 5 '12 at 8:33
@avi meta.judaism.stackexchange.com/q/501 –  msh210 Mar 5 '12 at 15:38

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