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We pasken like Abaye in 6 places in Shas:

  • 1) "יאוש שלא מדעת" (Bava Metzia 21b) whether despair of recovering a lost item that one didn't know about is considered a conscious feeling

אביי אמר לא הוי יאוש ורבא אמר הוי יאוש

  • 2) "עד זומם" (Sanhedrin 27a) whether testimony a conspiring witness may have provided is retroactively nullified after he's found to be a conspiring witness

עד זומם אביי אמר למפרע הוא נפסל ורבא אמר מיכן ולהבא הוא נפס

  • 3) "לחי העומד מאליו" (Eruvin 15a) - whether a side post at the entrance to an alleyway that was not put there for the express purpose of permitting one to carry on Shabbos allows is a valid side post

איתמר לחי העומד מאליו אביי אמר הוי לחי רבא אמר לא הוי לחי

  • 4) "קידושין שלא נמסרו לביאה" (Kiddushin 51a-52a)- whether kiddushin that is not given to consummation is considered kiddushin

איתמר קידושין שאין מסורין לביאה אביי אמר הוו קידושין רבא אמר לא הוו קידושין

  • 5) "גילוי דעת בגט" (Gittin 34a)- whether disclosure of intent with regard to a bill of divorce is a significant matter/ and without it would the get be rendered it void

בגלוי דעתא בגיטא קמיפלגי דאביי סבר גלוי דעתא בגיטא לאו מלתא היא ורבא סבר גלוי דעתא בגיטא מילתא היא

  • 6) "מומר אוכל נבלות להכעיס" (Sanhedrin 27a)- whether a transgressor who eats non-kosher meat to express brazeness/ chutzpah can be a valid witness

מומר אוכל נבילות לתיאבון דברי הכל פסול להכעיס אביי אמר פסול רבא אמר כשר


Is there a specific reason or common theme why we only pasken like Abaye in these 6 cases of the "יע"ל קג"ם" (Yaal Kigam)?


EDIT: Found this question which asks about Abaye/Rava but also other k'lalei psak. My question is on a more micro level, ie specifically about Abaye/ Rava.

marked as duplicate by DonielF, Double AA Mar 25 at 16:42

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  • 2
    Broader duplicate: judaism.stackexchange.com/q/101105 – DonielF Mar 25 at 16:08
  • As I answered in the duplicate question, Yaal Kagam is just an abbreviation to remember how those Halochos are ruled. Your question implies that they have clearly developed worldviews from which those Halochos follow. Unfortunately, I failed to find any consistency in their views and in all other sages. I see little consistency from Sugya to Sugya and practically no discussion of the underlying principles of their reasoning. – Al Berko Mar 25 at 16:16
  • Similar to this one too judaism.stackexchange.com/questions/43364/… – alicht Mar 25 at 18:00

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