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Sugya: אתי רבים ומבטלי מחיצות

Major Questions:

The Gemara answered the contradiction between the Mishna and the Braissa in the opinion of the Rabanan by explaining the case of פסי ביראות  has שם ד’ מחיצות  by the case of the Braissa of a street with walls on two sides with a lechi/Korah on both ends is not שם ד’ מחיצות. Since we rule that a Lechi is considered a Mechitza how could the Gemara say the case of the Braissa is not שם ד’ מחיצות? 

Learn רשב”א “דרבנן

https://hebrewbooks.org/pdfpager.aspx?req=37275&st=&pgnum=25

Rebbe Yochanan says that Yerushalayim would be considered a Reshus Haribim if the gates are not closed at night.  Rebbe Yochanan does not line up with Rebbe Yehuda or Rabanan as Yerushalayim has 4 walls and two of its wall are whole walls?

Learn רשב”א “הכא איכא

https://hebrewbooks.org/pdfpager.aspx?req=37275&st=&pgnum=25

The Rashba gives two answers to the above question. What is the difference between the two answers?

How do we conclude l’halacha? Do we rule like ר”י that אתי רבים ומבטלי מחיצות? 

Learn רשב”א “הכא איכא – last paragraph “וקיי”ל”

Learn רמב”ם הלכות שבת פרק י”ז הלכה י 

Learn שולחן ערוך אורח חיים ס’ שס”ד סע’ ב

Concept – נעילת דלתות

How does closing the gates at night remove the issue of אתי רבים ומבטלי מחיצות? 

According to the Ritva? 

According to רש”י דף ק”א “חייבין עליה 

Do the doors need to be closed at night?

How many doors are needed?

Learn ביאור הלכה “והוא שננעלת בחילה

Bring a proof from רשב”א “הכא איכא

How are city wide Eruvin able to enclose and permit carrying inside the Eruv by using tzuras hapesach when the Eruv encompasses streets that are 16 Amos wide and are considered a Reshus Harabim in which doors are needed?

See משנה ברורה ס”ק ח and ביאור הלכה “ואחר שעשה 

Quickly review the גמרא דף כב. “ורמי דר’ יהודה until “א”ר יצחק”

Review תוס’ חייבין

Learn ריטב”א דף כב. “כאן (see bottom of post) 

Questions:

What is the difference between the the answer of the Ritva from Tosfos answer? 

What part/s of Yerushalayim would be a Reshus Harabim if the gates were not closed nightly?

When we say אתי רבים ומבטלי מחיצות  – which walls do the Rabim break? 

Review תוס’ “והא

What is the difference between how the Ritva answers the question and how Tosfos answers the question? 

Learn תוס’ “קשיא

How does a lechi function as a mechitza? 

Learn תוס’ “דרבנן

Learn רשב”א

https://hebrewbooks.org/pdfpager.aspx?req=37275&st=&pgnum=25

Learn the משנה דף כב and the גמרא until “ורמי”

Learn תוס’ “והא

Clarify the question of Tosfos. 

How does Tosfos answer his question?

Learn תוס’ דף ו: “וכי תימא (the question and the skip to ועי”ל – twelfth narrow line) who gives a different answer to Tosfos question. 

Learn ריטב”א דף כב. “כאן. 

Note how he answers Tosfos question. 

Is there a difference between how the Ritva answers the question and how Tosfos answers the question? 

Continue learning the גמרא until “א”ר יצחק”

Quickly review the גמרא דף כב. “כלל אמר רבי שמעון בן אלעזר (two lines before the wide lines) until the Mishnah

Questions:

Why is a דירה שתשמישה לאויר not considered a דירה to be granted the ability to carry inside its mechitzos even when the area is larger then בית סאתים?

See רש”י דף טו. “משום דהוי 

Can an area that is covered with a roof be classified as a דירה שתשמישה לאויר and limited to size of בית סאתים?

See רש”י דף טו. “משום דהוי 

Learn רמב”ם הלכות שבת פרק ט”ז הלכה א

Does it matter on the type of roofed area?

Learn ביאור הלכה ס’ שס”ב סע’ א “או לשמור 

(See פרי מגדים – אשל אברהם & משבצות זהב)

See ה’ חזון איש  who argued on the ביאור הלכה 

What is considered עשוי לדירה?

Learn שולחן ערוך או”ח ס’ שס”ב סע’ א

Learn ביאור הלכה ס’ שנ”ח סע’ א

Learn the משנה דף כב and the Gemara until “ורמי”

Quickly review the גמרא דף כב. “ר’ יהודה אומר until “אמר רבי שמעון בן אלעזר  (two lines before the wide lines) 

What is the explanation of  אריך וקטן?

See רש”י 

See ריטב”א  for different explanation 

Continue the Gemara until the Mishna

What are these new rules? 

Review the גמרא דף כב. “ר’ יהודה אומר until “אמר רבי שמעון בן אלעזר  (two lines before the wide lines) 

Learn תוס’ “או

Clarify the question of the Gemara בור ופסים or בור ולא פסים 

Question:

What is the reason the Gemara entertains allowing for area slightly larger than בית סאתים?

Learn ח’ ר”ן (see below)

Learn תוס’ ריד & ריטב”א בשם יש מפרשים & פ’ מש’ לרמב”ם for a different explanation than Rashi.

https://hebrewbooks.org/pdfpager.aspx?req=14312&st=&pgnum=254

What is the explanation of  אריך וקטן?

See רש”י 

See ריטב”א  for different explanation 

Review the end of the Mishna at the beginning of the Perek. 

Learn the גמרא דף כב. “ר’ יהודה אומר until “אמר רבי שמעון בן אלעזר  (two lines before the wide lines) 

Learn תוס’ “או

Clarify the question of the Gemara בור ופסים or בור ולא פסים 

Learn תוס’ ריד & ריטב”א בשם יש מפרשים  for a different explanation than Rashi.