A boy asked me today:
How does the gemora choose if to use something as a proof to one side or as a question on the other?

The example he brought was:

Of a question: Kiddushin 63b

תנן רצו אחד נותן גט ואחד כונס תיובתא דרב אמר לך רב שאני התם דכיון דאיכא אחר בהדיה אירתותי מירתת

Of a proof: Ibid

תניא כוותיה דרב אסי

Please help me find the answer

  • The gemara sometimes has two versions, one where it was asked as a question, and the other where it is brought as a proof. At the end of the day, they amount to the same thing, which is that an additional source supports one side, and not the other. – רבות מחשבות Jul 1 '18 at 2:58
  • Thank you @רבותמחשבות i understand that but i thought their might be some reason behind it to – hazoriz Jul 1 '18 at 3:00
  • A good example of this is Kesubos 9b where the gemarra first brings a Mishnah as support for a teaching by saying אף אנן נמי תנינא, and then a few lines later asks a question (because this teaching already appears in a Mishnah) by saying מאי קמ"ל תנינא – robev Jul 1 '18 at 3:04
  • One example: judaism.stackexchange.com/q/47796/170 – msh210 Jul 1 '18 at 3:47

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