Category: Eruvin

Learn “גמרא דף ו: “ההוא מבוי עקום (four lines before the wide lines) until “דף ז. “מ”מ קשיא (eight lines from top of the Amud)
Learn “תוס’ דף ו: “ומי
Learn “תוס’ דף ו: “כאן

Continue learning the “גמרא דף ז. “מ”מ קשיא until the two dots on דף ז

Conclusion of Sugya:
How to make an Eruv on a street which is a Reshus Harabim?

Please write a summary and conclusion of the Sugya

List the opinion of the Chachamim and Rebbe Yochanan in regards to what is required on the open sides of the street
Discuss if its contingent on the their argument in regards to אתי רבים ומבטלי מחיצות
Do we conclude like the opinion of Rebbe Yochanan?
List the opinion of the ריף
https://hebrewbooks.org/pdfpager.aspx?req=14312&st=&pgnum=328
and the רא”ש ס’ ח
https://hebrewbooks.org/pdfpager.aspx?req=14312&st=&pgnum=214

List the ruling of the Rambam
See רמב”ם ה’ שבת פרק יד הלכה א and פרק יז הלכה ג
https://hebrewbooks.org/pdfpager.aspx?req=14278&st=&pgnum=58
See רמב”ם ה’ שבת פרק יז הלכה י
https://hebrewbooks.org/pdfpager.aspx?req=14278&st=&pgnum=73

Does the Rambam rule like Rebbe Yochanan?
Seemingly the gemara only discussed whether the door needs to be closed at night or suitable to be closed in regards to a מבוי מפולש.
From where does the Rambam know that ראוי לנעול is acceptable for a רה”ר?
List the different explanations how to explain the ruling of the Rambam

1. See מגיד משנה
   https://hebrewbooks.org/pdfpager.aspx?req=14278&st=&pgnum=73
2. See רשב”א דף ו: “אלא ראויות לנעול for his explanation of the Rambam
   https://hebrewbooks.org/pdfpager.aspx?req=37275&st=&pgnum=9
   https://hebrewbooks.org/pdfpager.aspx?req=37275&st=&pgnum=10
3. See דברי יחזקאל ס’ ו אות א for a different explanation of the opinion of the Rambam
   https://hebrewbooks.org/pdfpager.aspx?req=14038&st=&pgnum=62
   https://hebrewbooks.org/pdfpager.aspx?req=14038&st=&pgnum=63
4. See ב’ גר”א for a new explanation of the Rambam

How does the Shulchan Aruch conclude? (שולחן ארוך או”ח ס’ שס”ד סע’ א)
https://hebrewbooks.org/pdfpager.aspx?req=40431&st=&pgnum=553
and ס’ שמ”ה סע’ ז
https://hebrewbooks.org/pdfpager.aspx?req=40431&st=&pgnum=531

Should one rely on an Eruv that is constructed from צוה”פ when it includes streets which are wider than 16 Amos?
List the different opinions

1. See משנה ברורה שמ”ה סע ז ס”ק כג and “ביאור הלכה “שאין
   https://hebrewbooks.org/pdfpager.aspx?req=40431&st=&pgnum=531
2. See ערוך השולחן ס’ שמ”ה אות יז – כב
   https://hebrewbooks.org/pdfpager.aspx?req=9101&st=&pgnum=384
   https://hebrewbooks.org/pdfpager.aspx?req=9101&st=&pgnum=385
   https://hebrewbooks.org/pdfpager.aspx?req=9101&st=&pgnum=386
3. See חזון איש ס’ ק”ז אות ד https://hebrewbooks.org/pdfpager.aspx?req=14336&st=&pgnum=297

Topic: אתי רבים ומבטלי מחיצות and removing the issue through placing דלתות

Questions:

When the public walks through mechitzos does it break the entire wall on that side or just the area the people are walking through?

Bring a proof from “תוס’ דף כב. “חייבין

And see “ריטב”א דף כב. “כאן הודיעך who argues on Tosfos

How does doors remove the issue of אתי רבים ומבטלי מחיצות? Even if the doors are closed at night people are still streaming into this city/street the entire day?

See “רש”י דף ק”א “חייבין עליה

And “ריטב”א דף כב. “כאן הודיעך for a different reason than Rashi

See דברי יחזקאל ס’ ה אות ח for a חקירה on how doors help

https://hebrewbooks.org/pdfpager.aspx?req=14038&st=&pgnum=54

Question:

How can the Gemara compare the requirements for the entrance to yerushalayim to the opening between the blocks of the פסי ביראות. The entrance of Yerushalyim was 16 Amos and the size of the space between the blocks of פסי ביראות was just 13 Amos. Perhaps the Rabanan would agree when the width of the entrance is 16 amos (the size of a Reshus Harabim) we would say אתי רבים ומבטלי מחיצות

Learn “תוס’ דף כב. “והא

Major Question:

There seems to be a contradiction between “תוס’ דף כב. “והא and “תוס’ דף ו: “והאמר According to תוס’ דף כב the Rabanan hold we do not say אתי רבים ומבטלי מחיצות on a צוה”פ but תוס’ דף ו is clear that we do say אתי רבים ומבטלי מחיצות on a צוה”פ?

See ת’ רע”א חדשות ס’ ו who explains there is a big difference between the case of the two Gemaras

Do דלתות need a צוה”פ?

This is a major dispute in the Achronim (See חזון איש)

Is it possible to transform a town square into a reshus hayachid?

See the מלחמת ה’ on the ריף on the גמרא דף כב

https://hebrewbooks.org/pdfpager.aspx?req=14312&st=&pgnum=336

Yesterday we discussed two answers to the following major question:
The gemara asks a question on the Rabanan how could they allow a לחי וקורה on one side and צוה”פ on the other when Yerushalayim needed it’s gates closed in order to prevent it from being a Reshus Harabim.
How could the gemara challenge the Rabanan’s opinion from the opinion of Rebbe Yochanan when it’s clear from דף כב that they disagree on when we say אתי רבים ומבטלי מחיצות?
Tosfos “תוס’ דף ו:” והאמר (from וא”ת) – From Rebbe Yochanan opinion of when we say אתי רבים ומבטלי מחיצות with only four partial walls we can learn that the Rabanan should also say אתי רבים ומבטלי מחיצות when there are just two complete walls.
Ritva דף כב. “כאן הודיעך – The Gemara is ruling like Rebbe Yochanan when we say אתי רבים ומבטלי מחיצות but rules like the Rabanan in regards to the minimum amount of walls needed to create a Reshus Hayachid.

Major Question:
Why should Yerushalayim need doors closed at night;Yerushalayim had four walls so according to Rabanan we should not say אתי רבים ומבטלי מחיצות and since it had two whole side walls we should not say אתי רבים ומבטלי מחיצות even according to Rebbe Yochanan?
Learn תוס’ דף כב. “חייבין
Learn ריטב”א דף כב. “כאן הודיעך for an answer
https://hebrewbooks.org/pdfpager.aspx?req=37287&st=&pgnum=34

Questions:
Does אתי רבים ומבטלי מחיצות break all the walls or just the ones the public are passing through?
When the public walks through mechitzos does it break the entire wall on that side or just the area the people are walking through?
Bring a proof from the above Ritva

Is it possible to transform a town square into a reshus hayachid?

Learn the בעל המאור and מלחמת ה’ on the ריף on the גמרא דף כב who discusses all the points above
https://hebrewbooks.org/pdfpager.aspx?req=14312&st=&pgnum=336

Very quickly review משנה דף כב and the Gemara until א”ר יצחק (bottom of the Amud)

Clarify when we say אתי רבים ומבטלי מחיצות

Major Question:
The gemara asks a question on the Rabanan how could they allow a לחי וקורה on one side and צוה”פ on the other when Yerushalayim needed it’s gates closed in order to prevent it from being a Reshus Harabim.
How could the gemara ask on the Rabanan a question based on the requirements of Rebbe Yochanan. They clearly have different requirements. As the Rabanan hold if there are four corners it’s considered a Reshus Hayachid and we don’t say אתי רבים ומבטלי מחיצות?
There is a major dispute in the Rishonim how to answer this question
Learn “תוס’ דף ו:” והאמר from וא”ת

Question:
When the public walks through mechitzos does it break the entire wall on that side or just the area the people are walking through?
Learn תוס’ דף כב. “והא” & חייבין”
Learn ריטב”א דף כב. “כאן הודיעך for a different approach than tosfos.
https://hebrewbooks.org/pdfpager.aspx?req=37287&st=&pgnum=34

Learn the בעל המאור and מלחמת ה’ on the ריף on the גמרא דף כב who dispute the point above
https://hebrewbooks.org/pdfpager.aspx?req=14312&st=&pgnum=336

Is it possible to transform a town square into a reshus hayachid?
What’s the position of the בעל המאור and מלחמת ה’ on this?

Review משנה דף כב and the Gemara until א”ר יצחק (bottom of the Amud)

Clarify when we say אתי רבים ומבטלי מחיצות

Major Question:
The gemara asks a question on the Rabanan How could they allow a לחי וקורה on one side and צוה”פ on the other when Yerushalayim needed it’s gates closed in order to prevent it from being a Reshus Harabim.
How could the gemara ask on the Rabanan a question based on the requirements of Rebbe Yochanan. They clearly have different requirements. As the Rabanan hold if there are four corners it’s considered a Reshus Hayachid and we don’t say אתי רבים ומבטלי מחיצות?
There is a major dispute in the Rishonim how to answer this question
Learn “תוס’ דף ו:” והאמר from וא”ת
Learn ריטב”א דף כב
Also see the בעל המאור and מלחמת ה’ on the ריף halachic conclusion of the גמרא דף כב

Question:
When the public walks through mechitzos does it break the entire wall on that side or just the area the people are walking through?
Learn תוס’ דף כב. “והא” & חייבין”
And ריטב”א דף כב for a different approach than tosfos.

Learn תוס’ דף כב “קשיא

Very quickly review the גמרא דף ו. “ת”ר כיצד מערבין רה”ר (two dots – six lines from bottom of the Amud) until “דף ו: “איבעיא להו (middle of the Amud)

Questions:
Is the question of the Gemara from the fact that yerushalayim needed two doors or from the fact that the door needed to be closed at night?
Learn “תוס’ דף ו: ” והאמר until וא”ת

Learn משנה דף כב and the Gemara until א”ר יצחק (bottom of the Amud)
Continue learning “תוס’ דף ו:” והאמר from וא”ת who asks a major question from the גמרא דף כב

Learn תוס’ דף כב. “והא” & חייבין” & “קשיא

Review the גמרא דף ו. “ת”ר כיצד מערבין רה”ר (two dots – six lines from bottom of the Amud) until “דף ו: “איבעיא להו (middle of the Amud)

Questions:
How could a לחי או קורה help for a a street which is 16 Amos wide?
Learn “תוס’ דף ו. “ולחי

The gemara brings ר’ יוחנן who rules Yerushalayim would be considered a רה”ר if not for its doors being closed at night
Who is the Gemara asking on – the ת”ק or ב”ה?
Is the question of the Gemara from the fact that yerushalayim needed two doors or from the fact that the door needed to be closed at night?
Learn “תוס’ דף ו: ” והאמר until וא”ת

Learn משנה דף כב and the Gemara until א”ר יצחק (bottom of the Amud)
Continue learning “תוס’ דף ו:” והאמר from וא”ת who asks a major question from the גמרא דף כב

Learn the גמרא דף ו. “ת”ר כיצד מערבין רה”ר (two dots – six lines from of the Amud) until “דף ו: “איבעיא להו (middle of the Amud)

Learn גמרא שבת דף ו. “ת”ר ד’ רשויות לשבת (two dots middle of the Amud) until אדם עומד על האסקופה

Learn תוס’ “כיצד

Conclusion of the Sugya – מבוי שנפרצה מצידו

We learned the רי”ף, רא”ש סוף ס’ ד & סוף ס’ ז last week for their conclusion l’halacha in regards to a מבוי שנפרצה מצידו
https://hebrewbooks.org/pdfpager.aspx?req=14312&st=&pgnum=214&hilite=

Learn רמבם ה’ שבת יז, יז and the מגיד משנה for a novel conclusion
https://hebrewbooks.org/pdfpager.aspx?req=14278&st=&pgnum=75

Learn שולחן ערוך ס’ שס”ה סע’ א-ב with the משנה ברורה
https://hebrewbooks.org/pdfpager.aspx?req=60389&st=&pgnum=72

Questions:
Would גידודי help when the פירצה is on the front end of the side wall?
See “ביאור הלכה ס’ שס”ה,א “ואם לא נשאר

How does one fix a פירצה on the side wall when the first four tefachim of the side wall is still standing?
See רשב”א דף ה: “מבוי
https://hebrewbooks.org/pdfpager.aspx?req=37275&st=&pgnum=8
and משנה ברורה ס’ שס”ה ס”ק י”א

How does one fix a פירצה on the side wall when missing the first four tefachim of the side wall?
See first few lines of “ביאור הלכה ס’ שס”ה א “אסור אלא א”כ

What defines an area to be לא בקעי בה רבים?
See רש”י דף ו. “מכלל דרב הונא
and “ביאור הלכה ס’ שס”ה, ב “דלא בקעי בה רבים
and גאון יעקב דף ו. “בקעי

Why does בקעי בה רבים decrease the allowance for the opening?
See משנה ברורה שס”ה ס”ק י, שעה”צ אות ח for three reasons

Learn the גמרא דף ו. “ת”ר כיצד מערבין רה”ר (two dots – six lines from of the Amud) until “דף ו: “איבעיא להו (middle of the Amud)

Conclusion of the Sugya מבוי שנפרצה מצידו

How do we conclude l’halacha in regards to a מבוי שנפרצה מצידו?
Learn רי”ף, רא”ש סוף ס’ ד & סוף ס’ ז
https://hebrewbooks.org/pdfpager.aspx?req=14312&st=&pgnum=214&hilite=

Learn רמבם ה’ שבת יז, יז and the מגיד משנה for a novel conclusion
https://hebrewbooks.org/pdfpager.aspx?req=14278&st=&pgnum=75

Learn שולחן ערוך ס’ שס”ה סע’ א-ב with the משנה ברורה
https://hebrewbooks.org/pdfpager.aspx?req=60389&st=&pgnum=72

Questions:
Would גידודי help when the פירצה is on the front end of the side wall?
See ביאור הלכה ס’ שס”ה,א “ואם לא נשאר

How does one fix a פירצה on the side?
See רשב”א דף ה: “מבוי
https://hebrewbooks.org/pdfpager.aspx?req=37275&st=&pgnum=8
and ביאור הלכה ס’ שס”ה א “אסור אלא א”כ

Why does בקעי בה רבים decrease the allowance for the opening?
See משנה ברורה שס”ה ס”ק י, שעה”צ אות ח for three reasons

Conclusion of the Sugya מבוי שנפרצה מצידו

Question:
A פירצה in the front of the side wall corner is only allowed to be 3 tefachim yet if the פירצה is in the front corner it’s allowed to be up to 4 tefachim.
What’s the explanation for the difference?
See רשב”א
And רש”ש
And מהרש”א
And תוס’ רבינו פרץ

How do we conclude l’halacha in regards to a מבוי שנפרצה מצידו?
Learn רי”ף, רא”ש ס’ סוף ס’ ד & ס’ ז
https://hebrewbooks.org/pdfpager.aspx?req=14312&st=&pgnum=214&hilite=

Learn רמבם ה’ שבת יז, יז and the מגיד משנה for a novel conclusion
https://hebrewbooks.org/pdfpager.aspx?req=14278&st=&pgnum=75

Learn שולחן ערוך ס’ שס”ה סע’ א-ב with the משנה ברורה
https://hebrewbooks.org/pdfpager.aspx?req=60389&st=&pgnum=72

Questions:
Would גידודי help when the פירצה is on the front end of the side wall?
See ביאור הלכה ס’ שס”ה א “ואם לא נשאר

How does one fix a פירצה on the side?
See רשב”א דף ה: “מבוי
https://hebrewbooks.org/pdfpager.aspx?req=37275&st=&pgnum=8
and ביאור הלכה ס’ שס”ה א “אסור אלא א”כ

Why does בקעי בה רבים decrease the allowance for the opening?
See משנה ברורה שס”ה ס”ק י, שעה”צ אות ח for three reasons

Review the גמרא דף ו. “ורב חנן בר רבא (middle of the Amud) until the two dots (six lines from bottom of the Amud)

Clarify what case רב הונא agrees the size of פירצה on side wall could be 10 Amos.
What is the explanation for the different circumstances that affect the allowance of the size of פירצה on side wall

Questions:
Why does בקעי בה רבים decrease the allowance for the opening?
See משנה ברורה שס”ה ס”ק י, שעה”צ אות ח for three reasons
https://hebrewbooks.org/pdfpager.aspx?req=60389&st=&pgnum=72

Why does גדודי allow the opening to be larger?

How does one fix a Pirtzah on the side?
See רשב”א דף ה: “מבוי
https://hebrewbooks.org/pdfpager.aspx?req=37275&st=&pgnum=8

Does Rav Huna argue on Rav Ami and Rav Assi?
See רמבם ה’ שבת יז, יז and מגיד משנה
https://hebrewbooks.org/pdfpager.aspx?req=14278&st=&pgnum=75

See רא”ש סוף ס’ ז
https://hebrewbooks.org/pdfpager.aspx?req=14312&st=&pgnum=214&hilite=

A Pirtza in the front of the side wall corner is only allowed to be 3 tefachim yet if the Pirtza is in the front corner it’s allowed to be up to 4 tefachim.
What’s the explanation for the difference?
See רשב”א
And רש”ש
And מהרש”א
And תוס’ רבינו פרץ

Very quickly review the גמרא דף ה: “אמר רב חנן בר רבא (two dots on bottom of the Amud) until אמר רב נחמן בר יצחק (nine lines from top of the Amud)

Questions:
What is the reason why רב הונא says the allowed size of a פירצה on side wall is only up to 4 Tefachim and not 10 Amos ?
Why does this reason not apply to the front wall at the entrance to the Mavui?
Review “תוס’ ו. “אחד (second half)
See גמרא דף ה. “איתמר משמיה דרב אמי ורב אסי (middle of the Amud) until “לרב יוסף
Learn רש”י דף ה carefully

Learn ריטב”א דף ו. “רב הונא אמר אחד זה
https://hebrewbooks.org/pdfpager.aspx?req=37287&st=&pgnum=9
According to the Ritva that רב הונא halacha applies even to the front wall at the entrance to the Mavui the reason Tosfos says for רב הונא does not apply.
What is the Ritva explanation of the opinion of רב הונא?

Learn the גמרא דף ה: “אמר רב נחמן בר יצחק ((nine lines from top of the Amud) until the two dots (six lines from bottom of the Amud)
(Focus on the argument of רב חנן בר רבא and רב הונא for the size of פירצה on side wall – we will come back to the Sugya of מבוי עקום after we finish this topic)
Clarify what case רב הונא agrees the size of פירצה on side wall could be 10 Amos.
What is the explanation for the different circumstances that affect the allowance of the size of פירצה on side wall
Why does בקעי בה רבים decrease the allowance for the opening?
See משנה ברורה שס”ה ס”ק י, שעה”צ אות ח

Why does גדודי allow the opening to be larger?

Very quickly review the גמרא דף ה: “אמר רב חנן בר רבא (two dots on bottom of the Amud) until אמר רב נחמן בר יצחק ((nine lines from top of the Amud)

Questions:
What is the reason why רב הונא says the allowed size of a פירצה on side wall is only up to 4 Tefachim and not 10 Amos ?
Why does this reason not apply to the front wall at the entrance to the Mavui?
Review “תוס’ ו. “אחד (second half)
See גמרא דף ה. “איתמר משמיה דרב אמי ורב אסי (middle of the Amud) until “לרב יוסף
Learn רש”י דף ה carefully

Learn ריטב”א דף ו. “רב הונא אמר אחד זה
https://hebrewbooks.org/pdfpager.aspx?req=37287&st=&pgnum=9
According to the Ritva that רב הונא halacha applies even to the front wall at the entrance to the Mavui the reason Tosfos says for רב הונא does not apply.
What is the Ritva explanation of the opinion of רב הונא?

Continue learning the Gemara until the two dots (six lines from bottom of the Amud)
(Focus on the argument of רב חנן בר רבא and רב הונא for the size of פירצה on side wall – we will come back to the Sugya of מבוי עקום after we finish this topic)
Clarify what case רב הונא agrees the size of פירצה on side wall could be 10 Amos.
What is the explanation for the different circumstances that affect the allowance of the size of פירצה on side wall?

Very quickly review the גמרא דף ה: “אמר רב חנן בר רבא (two dots on bottom of the Amud) until אמר רב נחמן בר יצחק ((nine lines from top of the Amud)

What is the case of קרו זוית?
Learn ריטב”א דף ו. “מאי שנא

https://hebrewbooks.org/pdfpager.aspx?req=37287&st=&pgnum=9

See ריף דף יא: מביא רב האי גאון

https://hebrewbooks.org/pdfpager.aspx?req=14312&st=&pgnum=329

and רמב”ם הלכות שבת פרק טז הלכה כ

https://hebrewbooks.org/pdfpager.aspx?req=14278&st=&pgnum=71

Questions:
Are all doorways in corners not considered פתחים?
Learn “תוס’ ו. “דפתחא
Learn רמב”ם הלכות שבת פרק טז הלכה כ who disagrees with Tosfos
Tosfos brought a proof from the גמרא דף ה that explain the case of a Mavui with entrances from the chatzer in the corners. How does the Rambam explain that Gemara?
There are multiple explanations הגהה תוס’ ר פרץ אות 221
See ריטב”א בדף ה.
And הגהות רא”מ הורוויץ על תוס in the back of the Gemara

Questions:
What is the reason why רב הונא says the allowed size of a פירצה on side wall is only up to 4 Tefachim and not 10 Amos ?
Learn “תוס’ ו. “אחד (second half)
Why does this reason not apply to the front wall at the entrance to the Mavui?
Learn ריטב”א דף ו. “רב הונא אמר אחד זה
https://hebrewbooks.org/pdfpager.aspx?req=37287&st=&pgnum=9
According to the Ritva that רב הונא halacha applies even to the front wall at the entrance to the Mavui the reason Tosfos says for רב הונא does not apply.
What is the Ritva explanation of the opinion of רב הונא?

Continue learning the Gemara until the two dots (six lines from bottom of the Amud)
(Focus on the argument of רב חנן בר רבא and רב הונא for the size of פירצה on side wall – we will come back to the Sugya of מבוי עקום after we finish this topic)

Learn גמרא דף ה: “אמר רב חנן בר רבא (two dots on bottom of the Amud) until אמר רב נחמן בר יצחק ((nine lines from top of the Amud)

Clarify what is defined as ‘ראשו’

Learn “תוס’ ו. “מצידו

What is the case of קרו זוית?

Learn ריטב”א דף ו. “מאי שנא

https://hebrewbooks.org/pdfpager.aspx?req=37287&st=&pgnum=9

See ריף דף יא: מביא רב האי גאון

https://hebrewbooks.org/pdfpager.aspx?req=14312&st=&pgnum=329

and רמב”ם הלכות שבת פרק טז הלכה כ

https://hebrewbooks.org/pdfpager.aspx?req=14278&st=&pgnum=71

Questions:

Are all doorways in corners not considered פתחים?

Learn “תוס’ ו. “דפתחא

Learn רמב”ם הלכות שבת פרק טז הלכה כ who disagrees with Tosfos

What is the point of argument between Tosfos and the Rambam?

See חידושי גר”ח שבת פרק טז הלכה טז

Why does רב הונא say that even a gap in the sidewall of a Mavui of only four tefachim is considered a פירצה?

According to רב הונא is the case of פירצה בראשו in the corner or on the front side of the Mavui?

Learn “תוס’ ו. “אחד

Learn ריטב”א דף ו. “רב הונא אמר אחד זה

https://hebrewbooks.org/pdfpager.aspx?req=37287&st=&pgnum=9