Rabbi Baruch Bodenheim: Gemara Eruvin: First Perek, יום רביעי Adar 22, Daf 8b-9a (03/15/23)

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Quickly review the גמרא דף ח: בעי מיניה רמי בר חמא (four lines from bottom of the Amud) until “איתיביה” (bottom of the Amud)

Continue learning the גמרא דף ח: “איתיביה until דף ט. “רב אשי אמר (nine lines from top of the Amud) 

Question:

Is רב אדא בר מתנה asking only on Rava who rules the Korah needs to be resting on top of the walls of the Mavui or also on Rav Chisda who rules according to opinion of קורה משום מחיצה the inner face plate of the Korah needs to be flush to the walls of the Mavui?

See תוס’ ישנים (on side of the Gemara) 

See ח’ ר”ן

Continue learning the גמרא דף ט. “רב אשי אמר until “תני ר’ זכאי (fourteen lines from top of the Amud)  

Learn תוס’ דף ט. “שאין who asks why is it necessary for the Korah to be within the height of 3 tefachim of the wall in order to say חבוט when it is clear from the gemara Sukkah that the concept of חבוט is not limited like לבוד to 3 tefachim. 

Questions:

Why do we need both concepts of חבוט and לבוד to connect the Korah to the walls of the Mavui.  Why can’t we consider the Korah connected through לבוד alone?

What is the shape of the pegs that are holding up the Korah?

Learn ריטב”א “כגון שאין בגובהן ג’ טפחים 

Note how the Ritva answers the above questions. See the answer the Ritva gives to Tosfos question. 

Learn רשב”א דף ט. “מהו דתימא and רשב”א דף ח: “לדברי המתיר