Quickly review the גמרא דף י עמוד ב “אם יש לו צורת הפתח (two dots – four lines form bottom of the Amud) until “מתני לה” (eight lines from top of the Amud)
Sugya: אמלתרא
Major Question:
The gemara inquires whether an אמלתרא would help a Korah be a valid Tikun for a Mavui whose opening is wider than 10 Amos. The Gemara (3a) said the benefit of an אמלתרא is that it attracts attention and makes the Korah noticable therefore a Korah with an אמלתרא can be placed higher than 20 Amos. An opening wider than 10 Amos is considered a Pirtzah. How could an אמלתרא help for an opening wider than 10 Amos as the issue is entirely different?
Conclusion of אתי אוירא מהאי גיסא ואוירא מהאי גיסא ומבטלה
Question:
In the case of עור העסלא (on bottom of דף י עמוד ב) if the total width of the seat is one tefach it is an אהל לטומאה. We discussed earlier a concept of אתי אוירא מהאי גיסא ואוירא מהאי גיסא ומבטלה. Why when the space between the two solid planks is equal or larger than the solid part don’t we apply the rule of אתי אוירא? The solid part of the seat should be negated and no longer considered an אהל לטומאה ?
Learn “תוס’ “ואצבעיים who explains some principles of when we do not apply the concept of אתי אוירא מהאי גיסא ואוירא מהאי גיסא ומבטלה
Quickly review the משנה דף ב
Learn the גמרא דף י עמוד ב “אם יש לו צורת הפתח (two dots – four lines form bottom of the Amud) until “מתני לה” (eight lines from top of the Amud)
Sugya: אמלתרא
Major Question:
The gemara inquires whether an אמלתרא would help a Korah be a valid Tikun for a Mavui whose opening is wider than 10 Amos. The Gemara (3a) said the benefit of an אמלתרא is that it attracts attention and makes the Korah noticable therefore a Korah with an אמלתרא can be placed higher than 20 Amos. An opening wider than 10 Amos is considered a Pirtzah. How could an אמלתרא help for an opening wider than 10 Amos as the issue is entirely different?
See ב”ח ס’ שס”ג סעיף כו
And שפת אמת דף ג. לא תהני
How do we conclude l’halacha regarding whether an אמלתרא can help for an opening wider than 10 Amos?
ery quickly review the “גמרא דף י: “וליחוש (seventeen lines from top of the Amud) until “תנן התם”
The gemara says we are not concerned that people will abandon the larger opening for the smaller opening unless there is a gain of a shortcut.
What happens if the people actually do abandon the larger opening?
Learn שולחן ארוך או”ח ס’ שס”ג סע’ לד with the משנה ברורה
Is the Shulchan Aruch explaining the issue of abandoning the larger opening like Rashi or the Meiri?
See
The Shulchan Aruch says placing a tzuras hapesach on the smaller opening will allow one to carry inside the mavui. Could one place a Lechi or Korah instead?
See ה’ רע”א who questions why placing a tzuras hapesach on the smaller opening will allow one to carry inside the mavui?
See משנה ברורה ס”ק ק”נ
Continue learning the גמרא דף י: “תנן התם (middle of the Amud) until the two dots.
Quickly review the גמרא דף י: “וליחוש (seventeen lines from top of the Amud) until “תנן התם”
The Gemara discusses a case where the fourth side of the Mavui is 15 Amos wide and places a board 3 Amos wide leaving a gap of space of 2 Amos between the board and the wall.
Questions:
What is the problem if the people stop traveling through the larger opening and only go through the smaller opening?
Rashi says one reason
See ח’ מאירי “וליחוש who says a different reason.
Does one need to place a Lechi or Korah for the gap of 2 Amos?
Learn חידושי מאירי beginning of of דף י עמוד ב who quotes the Raavad
Does one need to place a Lechi or Korah in addition to the פס for the opening of 10 Amos?
See “תוס’ “ועושה who says he needs a Lechi or Korah
Why does the Lechi need to be within three tefachim of the wall?
In the case where the entrance to the Mavui is 20 Amos wide and places a board four Amos long in the middle of the entrance in the direction of the side walls.
Does one need to place a Lechi or Korah on only one of the openings or on both?
See רש”י דף ה. “מתיר בפרצה
The gemara says we are not concerned that people will abandon the larger opening for the smaller opening unless there is a gain of a shortcut.
What happens if the people actually do abandon the larger opening?
See שולחן ארוך או”ח ס’ שס””ג סע’ לד and משנה ברורה ס”ק נ
Quickly review the גמרא דף י: “אי נמי until “וליחוש”
The Gemara introduces four concepts
1. פרוץ מרובה על העומד
2. עומד מרובה משני רוחות
3. פרוץ כעומד
4. אתי אוירא .. ומבטלה
According to the opinion that עומד מרובה משני רוחות is considered עומד מרובה does it have exactly the same status of עומד מרובה or is it a lower tier?
The gemara says it’s possible that פרוץ כעומד is good yet we still would say אתי אוירא מהאי גיסא ואוירא מהאי גיסא ומבטלה. If פרוץ is indeed כעומד why should it be any different than when the Amud is larger than the adjacent gap of air in which we do not say אתי אוירא ומבטלה?
Quickly review the גמרא דף י: “אי נמי until “וליחוש”
Clarify the four concepts the gemara introduces
1. פרוץ מרובה על העומד
2. עומד מרובה משני רוחות
3. פרוץ כעומד
4. אתי אוירא .. ומבטלה
Why don’t we consider the remaining opening of ten Amos to be פרוץ מרובה from the Amud adjacent to it?
See ח’ מאירי דף י (In middle) from “ואע”ג דפרוץ דפתח מרובה
The gemara says it’s possible that פרוץ כעומד is good yet we still would say אתי אוירא מהאי גיסא ואוירא מהאי גיסא ומבטלה. If פרוץ is indeed כעומד why should it be any different than when the Amud is larger than the adjacent gap of air in which we do not say אתי אוירא ומבטלה?
Review the גמרא דף י. “תני לוי (four lines from bottom of the Amud) until דף י: “אי נמי
Questions:
Rashi says a single post help can not reduce the size of the opening of the Mavui because אתי אוירא מהאי גיסא ואוירא מהאי גיסא ומבטלה
See רש”י דף י. “אין
See ח’ רע”א who asks on Rashi the gemara at this stage does not know of the concept of אתי אוירא ומבטל?
The Gemara first solution to reduce the size of the opening of the Mavui is to place a panel of four Amos continue learning the gemara which presents an alternate solution
Continue learning the גמרא דף י: “אי נמי until “וליחוש”
Clarify the three concepts the gemara introduces of פרוץ מרובה על העומד, פרוץ כעומד, אתי אוירא .. ומבטלה
List the three other options of the size and positioning the Gemara suggests for the panels of wood to reduce the size of the opening of the mavui.
Is there a benefit with any of these options more than the solution that Rav Yehuda presented?
Learn “תוס’ “ואמאי
Does one need to place a Lechi or Korah in addition to the פס?
Learn the “גמרא דף י. “תני לוי (four lines from bottom of the Amud) until דף י: “ואמאי יעשה
Questions:
Why doesn’t a single post help to divide the size of the opening of the Mavui?
See רש”י דף י. “אין
See ח’ רע”א who asks on Rashi the gemara at this stage does not know of the concept of אתי אוירא ומבטל?
How does placing a panel four Amos in the direction of the depth of the Mavui remove the issue of the size of the opening of the Mavui greater than ten Amos?
Learn ריטב”א דף י: “עושה who presents two different ways to explain the solution.
Learn תוס’ דף י: “עושה פס גבוה
Is Tosfos explaining like Rashi or the Ritva?
Why don’t we say אתי אוירא ומבטל on the panel of four Amos?
Learn the גמרא דף י. “והרחב מעשר ימעט (two dots) until “תני לוי” (four lines from bottom of the Amud)
What’s the explanation of the words “כלל כלל לא”
See רש”י
Question:
How could Rashi explain the Gemara is saying according to ר”י the opening can not exceed 10 Amos when ר”י is quoted as arguing on the Rabanan and permits the opening to exceed 10 Amos?
Learn ריטב”א “אבל הכא כלל כלל for an answer
See הגהות ר’ אליעזר משה הורביץ in back of the Gemara for a novel answer and new explanation in how the תיקון of קורה operates.
See ר’ יהונתן דף ב. “ורבי יהודה פליג who explains why ר”י permits the opening to exceed 10 Amos.
Learn the גמרא דף י. “תני לוי (four lines from bottom of the Amud) until דף י: “ואמאי יעשה
Very quickly review the גמרא דף ט: “אמר רבה בר רב הונא (thirteen lines from the bottom of the Amud) until “דף י. “האי ” (second line from top of the Amud)
Write out the steps of the Gemara
List the following opinions and what they said
ר’ זירא
רבינא
רבי
Continue learning the גמרא דף י. “האי until “אמר רב יוסף” (three lines before the wide lines)
Note: The opinion of ר’ יוסי who holds the minimum width of a Lechi is three tefachim is brought in the משנה דף יד עמוד ב
Continue learning the גמרא דף י. “אמר רב יוסף until the two dots (sixth wide line)
How do we conclude l’halacha in regards to נראה מבחוץ ושוה מבפנים