Daf Intro

a. In daf כב in מסכת בבא מציעא the גמרא brings several cases which challenge רבא , or אביי in the מחלוקת of יאוש שלא מדעת. The גמרא finally concludes that the הלכה follows אביי that יאוש שלא מדעת אינו יאוש . b. The גמרא brings a מחלוקת on a סימן בעשוי לידרס, which is an item that has an identifying mark, but is likely to be removed or trampled. The מחלוקת is if this is considered a valid סימן. c. Key terms and concepts: 1. תורם שלא מדעת - One who takes תרומה without consent of the owner of the produce is called תורם שלא מדעת, and the הלכת questions the validity of the separation. 2. כי יותן - Food can become טמאה if it comes in contact with one of seven liquids: Water, honey, dew, milk, oil, blood, and wine. 3. יע''ל קג''ם - The acronym when the הלכה sides with אביי over רבא.

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