Monthly Archive: August 2025
Rabbi Baruch Bodenheim: Gemara Shabbos: Perek Kirah, יום חמישי, Elul 5, Daf 41a (08/28/25)
Very quickly review גמרא דף מא. “א”ר זירא (two dots top of the Amud) until ר’ זירא הוה קא משתמיט (middle of the Amud)
Learn שולחן ערוך אורח חיים ס’ ג סע’ ד with the משנה ברורה how the Shulchan Aruch rules
https://hebrewbooks.org/pdfpager.aspx?req=60386&st=&pgnum=20&hilite=
When did Rav lean forward? When he enters the river or when he exited?
See רש”ש for explanation as to when Tava bent over when he entered or existed the river
https://hebrewbooks.org/pdfpager.aspx?req=37953&st=&pgnum=805
And משנה ברורה ס’ ב ס”ק א
https://hebrewbooks.org/pdfpager.aspx?req=60386&st=&pgnum=18
Learn the גמרא דף מא. “ר’ זירא הוה קא משתמיט (middle of the Amud) until the Mishna
Is it also prohibited to move from Bavel to a different country?
Why is it prohibited to move from Bavel to Eretz Yisrael?
Does it apply from other places in chutz laaretz to Eretz Yisrael?
See גמרא כתובת דף קיא and רש”י “כי אסור לצאת מבבל
https://hebrewbooks.org/shas.aspx?mesechta=15&daf=111&format=pdf
The alternate way of explaining the pasuk is that it’s referring to the Keilim of the beis Hamikdash.
See מהרש”א ח’ אגדות כתובת דף קי: “עובר בעשה
https://hebrewbooks.org/pdfpager.aspx?req=37959&st=&pgnum=377
See רמב”ם ה’ מלכים פרק ה’ הלכה יב
https://hebrewbooks.org/pdfpager.aspx?req=14279&st=&pgnum=434
https://hebrewbooks.org/pdfpager.aspx?req=14279&st=&pgnum=435
Rabbi Baruch Bodenheim: Morning Kollel: גמרא שבת – פרק הבונה דף קב: (08/28/25)
Click on Right Side of Player to Download the Shiur
Rabbi Baruch Bodenheim: Gemara Shabbos: Third Perek – Wednesday night shiur, Elul 4 -Sugya: Heating food on Shabbos (08/27/25)
Halachic Conclusions:
Conclusion of topic below
Questions:
May one move a pot which is placed on the blech in an area which is not directly over the fire to a part of the blech which is directly over the fire?
Is the entire blech considered a stovetop which is גרוף וקטום or is it considered just סמוך לכירה?
Bring a proof
Learn אורחת שבת ח”א פרק ב סע’ סט & ע with the footnotes
Learn אגרות משה או”ח חלק ד ס’ עד, בישול אות יב
Learn חזון איש או”ח ס’ ל”ז ס”ק י
Learn שמירת שבת כהלכתו פרק א סעיף כה & הערה קכו
And קובץ הלכות שבת ח”ב פרק כו סע’ מ & הערה נה
Focus on next question
The prevalent practice is to use a blech on a stovetop which would serve as קטום. What is the source that a sheet of metal would accomplish the same halachic status as placing ash on the coals?
See שולחן ערוך אורח חיים ס’ רנ”ג סע’ ג and משנה ברורה ס”ק פא
https://hebrewbooks.org/pdfpager.aspx?req=60388&st=&pgnum=51
In many electrical appliances the heating elements are covered by a sheet of metal like a crock pot which the walls of the crock pot covers the coils. Does one need to cover/line the crock pot or is the sheet of metal/ walls considered a blech?
Learn רש”י שבת דף לז. “גבה
Learn מגן אברהם שי”ח ס”ק לא
https://hebrewbooks.org/pdfpager.aspx?req=14325&st=&pgnum=26
See ביאור הלכה שי”ח ס’ א “ליתן עליה
https://hebrewbooks.org/pdfpager.aspx?req=60388&st=&pgnum=45
Learn ששכה”ל פרק א סעיף כט & הערה פב (new print)
Learn קובץ הלכות שבת ח”ב פרק כו סע’ יח & הערה כד
Would aluminum foil which does not reduce the temperature be acceptable to be considered קטום?
Learn קובץ הלכות שבת ח”ב פרק כו סע’ יג & הערה יז-יח
Learn ששכה”ל פרק א הערה סג (new print)
If one leaves the aluminum foil on the electrical appliance from week to week. Is it still considered קטום ?
Learn קובץ הלכות שבת ח”ב פרק כו סע’ יט & הערה כז
A hot plate that does not have ability to change its temperature, does it need to be covered?
Learn ששכה”ל פרק א סעיף ל & הערה פג (new print)
Learn אגרות משה או”ח חלק ד ס’ עד בישול ס”ק לה
Learn קובץ הלכות שבת ח”ב פרק כו סע’ כ & הערה כט
Rabbi Baruch Bodenheim: Gemara Shabbos: Perek Kirah, יום רביעי, Elul 4, Daf 41a (08/27/25)
Review גמרא דף מא. “א”ר זירא (two dots top of the Amud) until ר’ זירא הוה קא משתמיט (middle of the Amud)
Learn שולחן ערוך אורח חיים ס’ ג סע’ ד with the משנה ברורה
https://hebrewbooks.org/pdfpager.aspx?req=60386&st=&pgnum=20&hilite=
Why is it like bringing a mabul to the world?
See מהרש”א ח’ אגדות נדה דף יג
https://hebrewbooks.org/pdfpager.aspx?req=40053&st=&pgnum=207
Why if one covers his bris is it like he is denying the bris of Avraham?
See מהרש”א
https://hebrewbooks.org/pdfpager.aspx?req=37953&st=&pgnum=457
When did Rav lean forward? When he enters the river or when he exited?
See רש”ש
https://hebrewbooks.org/pdfpager.aspx?req=37953&st=&pgnum=805
And משנה ברורה ס’ ב ס”ק א
https://hebrewbooks.org/pdfpager.aspx?req=60386&st=&pgnum=18
Learn the גמרא דף מא. “ר’ זירא הוה קא משתמיט (middle of the Amud) until the Mishna
Is it also prohibited to move from Bavel to a different country?
Why is it prohibited to move from Bavel to Eretz Yisrael?
Does it apply from other places in chutz laaretz to Eretz Yisrael?
See גמרא כתובת דף קיא and רש”י “כי אסור לצאת מבבל
The alternate way of explaining the pasuk is that it’s referring to the Keilim of the beis Hamikdash.
See מהרש”א ח’ אגדות כתובת דף קי: “עובר בעשה
See רמב”ם ה’ מלכים פרק ה’ הלכה יב
Rabbi Avraham Meisels: Gemara Pesachim – Second Perek – Kol Sha’ah – Daf 21a: Mishna: Kol Sha’ah.. & Gemara: Kol Sha’ah… (08/26/25)
Click on Right Side of Player to Download the Shiur



Rabbi Zev Wolbe: Mishna Berura Halacha Shiur – Hilchos Sukkah – Siman 638: The Sukkah and it’s Decorations are Assur all Seven Days (08/26/25)
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Rabbi Baruch Bodenheim: Gemara Shabbos: Perek Kirah, יום שלישי, Elul 3, Daf 41a (08/26/25)
Conclusion – Halacha of Swimming on Shabbos:
(For explanation according to the Rif what the uncertainty of Rebbe Zeira was and how this coincides with conclusion of the difference of the pol of water has high walls or not – see שפת אמת)
How does the Shulchan Aruch conclude?
Learn שולחן ערוך אורח חיים ס’ של”ט סע’ ב and the משנה ברורה
https://hebrewbooks.org/pdfpager.aspx?req=60388&st=&pgnum=376
Learn מגן אברהם ס’ שכ”ו ס”ק ח who cites the minhag is not to immerse in a body of water on Shabbos.
https://hebrewbooks.org/pdfpager.aspx?req=14325&st=&pgnum=181
Learn משנה ברורה ס’ שכ”ו ס”ק כד
https://hebrewbooks.org/pdfpager.aspx?req=60388&st=&pgnum=328
https://hebrewbooks.org/pdfpager.aspx?req=60388&st=&pgnum=329
Learn ערוך השולחן ס’ של”ט סע’ ד
Learn שו”ת תשובות והנהגות חלק א ס’ רכב
https://hebrewbooks.org/pdfpager.aspx?req=20025&st=&pgnum=161
https://hebrewbooks.org/pdfpager.aspx?req=20025&st=&pgnum=162
Continue learning the גמרא דף מא. “א”ר זירא (two dots top of the Amud) until ר’ זירא הוה קא משתמיט (middle of the Amud)
Learn שולחן ערוך אורח חיים ס’ ג סע’ ד with the משנה ברורה
Why is it like bringing a mabul to the world?
See מהרש”א ח’ אגדות נדה דף יג
Continue learning the Gemara until the Mishna
Rabbi Baruch Bodenheim: Gemara Shabbos: Third Perek – Monday night shiur, Elul 2 – Sugya: Heating food on Shabbos (08/25/25)
Halachic Conclusions:
Questions:
May one move a pot which is placed on the blech in an area which is not directly over the fire to a part of the blech which is directly over the fire?
Is the entire blech considered a stovetop which is גרוף וקטום or is it considered just סמוך לכירה?
Bring a proof
Learn אורחת שבת ח”א פרק ב סע’ סט & ע with the footnotes
Learn אגרות משה או”ח חלק ד ס’ עד, בישול אות יב

Learn חזון איש או”ח ס’ ל”ז ס”ק י


Learn שמירת שבת כהלכתו פרק א סעיף כה & הערה קכו
And קובץ הלכות שבת ח”ב פרק כו סע’ מ & הערה נה
The prevalent practice is to use a blech on a stovetop which would serve as קטום. What is the source that a sheet of metal would accomplish the same halachic status as placing ash on the coals?
See שולחן ערוך אורח חיים ס’ רנ”ג סע’ ג and משנה ברורה ס”ק פא
https://hebrewbooks.org/pdfpager.aspx?req=60388&st=&pgnum=51
In many electrical appliances the heating elements are covered by a sheet of metal like a crock pot which the walls of the crock pot covers the coils. Does one need to cover/line the crock pot or is the sheet of metal/ walls considered a blech?
Learn רש”י שבת דף לז. “גבה
Learn מגן אברהם שי”ח ס”ק לא
https://hebrewbooks.org/pdfpager.aspx?req=14325&st=&pgnum=26
See ביאור הלכה שי”ח ס’ א “ליתן עליה
https://hebrewbooks.org/pdfpager.aspx?req=60388&st=&pgnum=45
Learn ששכה”ל פרק א סעיף כט & הערה פב (new print)
Learn קובץ הלכות שבת ח”ב פרק כו סע’ יח & הערה כד
Would aluminum foil which does not reduce the temperature be acceptable to be considered קטום?
Learn קובץ הלכות שבת ח”ב פרק כו סע’ יג & הערה יז-יח
Learn ששכה”ל פרק א הערה סג (new print)
If one leaves the aluminum foil on the electrical appliance from week to week. Is it still considered קטום ?
Learn קובץ הלכות שבת ח”ב פרק כו סע’ יט & הערה כז
A hot plate that does not have ability to change its temperature, does it need to be covered?
Learn ששכה”ל פרק א סעיף ל & הערה פג (new print)
Learn אגרות משה או”ח חלק ד ס’ עד בישול ס”ק לה

Learn קובץ הלכות שבת ח”ב פרק כו סע’ כ & הערה כט
Rabbi Zev Wolbe: Mishna Berura Halacha Shiur – Hilchos Sukkah – Siman 638: The Sukkah and it’s Decorations are Assur all Seven Days (08/25/25)
Click on Right Side of Player to Download
Rabbi Baruch Bodenheim: Gemara Shabbos: Perek Kirah, יום שני, Rosh Chodesh Elul, Daf 40b -41a (08/25/25)
Conclusion Halacha of Swimming on Shabbos:
Very quickly review the גמרא דף מ: “א”ר זירא (three lines from the bottom of the Amud) until the two dots on top of דף מא.
How does the Shulchan Aruch conclude?
Learn שולחן ערוך אורח חיים ס’ של”ט סע’ ב and the משנה ברורה
https://hebrewbooks.org/pdfpager.aspx?req=60388&st=&pgnum=376
Based on the Shulchan Aruch are there swimming pools that are permissible to swim in?
Learn מגן אברהם ס’ שכ”ו ס”ק ח who cites the minhag is not to immerse in a body of water on Shabbos.
https://hebrewbooks.org/pdfpager.aspx?req=14325&st=&pgnum=181
Learn משנה ברורה ס’ שכ”ו ס”ק כד
https://hebrewbooks.org/pdfpager.aspx?req=60388&st=&pgnum=328
https://hebrewbooks.org/pdfpager.aspx?req=60388&st=&pgnum=329
Learn ערוך השולחן ס’ של”ט סע’ ד
https://hebrewbooks.org/pdfpager.aspx?req=67694&st=&pgnum=327
Learn שו”ת תשובות והנהגות חלק א ס’ רכב
https://hebrewbooks.org/pdfpager.aspx?req=20025&st=&pgnum=161
https://hebrewbooks.org/pdfpager.aspx?req=20025&st=&pgnum=162
Continue learning the גמרא דף מא. “א”ר זירא (two dots top of the Amud) until ר’ זירא הוה קא משתמיט (middle of the Amud)
Rabbi Avraham Meisels: Gemara Pesachim – Second Perek – Kol Sha’ah – Daf 21a: Mishna: Kol Sha’ah.. & Gemara: Kol Sha’ah… (08/20/25)
Click on Right Side of Player to Download the Shiur
Rabbi Baruch Bodenheim: Gemara Shabbos: Perek Kirah, יום חמישי, Av 27, Daf 40b – 41a (08/21/25)
Swimming on Shabbos:
Learn the גמרא דף מ: “א”ר זירא (three lines from the bottom of the Amud) until the two dots on top of דף מא.
Note the two explanations of Rashi whether having a rim around the pool permits or prohibits swimming.
Learn רי”ף and ר”ן
https://hebrewbooks.org/pdfpager.aspx?req=37953&st=&pgnum=586
Question:
What’s is the difference between Rashi first explanation and the Ran explanation of the words עקר?
Learn רמב”ם פרק כג הלכה ה
https://hebrewbooks.org/pdfpager.aspx?req=14278&st=&pgnum=105
Is the Rambam explaining like Rashi or the Ran?
Learn the מלחמת ה’
https://hebrewbooks.org/pdfpager.aspx?req=37953&st=&pgnum=587
How does the Shulchan Aruch conclude?
Learn שולחן ערוך אורח חיים ס’ של”ט סע’ ב and the משנה ברורה
https://hebrewbooks.org/pdfpager.aspx?req=60388&st=&pgnum=376
Based on the Shulchan Aruch are there swimming pools that are permissible to swim in?
Learn מגן אברהם ס’ שכ”ו ס”ק ח who cites the minhag is not to immerse in a body of water on Shabbos.
https://hebrewbooks.org/pdfpager.aspx?req=14325&st=&pgnum=181
Learn משנה ברורה ס’ שכ”ו ס”ק כד
https://hebrewbooks.org/pdfpager.aspx?req=60388&st=&pgnum=328
https://hebrewbooks.org/pdfpager.aspx?req=60388&st=&pgnum=329
Learn שו”ת תשובות והנהגות חלק א ס’ רכב
https://hebrewbooks.org/pdfpager.aspx?req=20025&st=&pgnum=161
https://hebrewbooks.org/pdfpager.aspx?req=20025&st=&pgnum=162
Rabbi Baruch Bodenheim: Gemara Shabbos: Perek Kirah, יום רביעי, Av 26, Daf 40b -41a (08/20/25)
Learn the גמרא דף מ: “היכי עביד הכי until “א”ר זירא ” (three lines from the bottom of the Amud)
Why is it prohibited to think about Torah in the bath house?
Why is it permitted to tell someone in the bath house that an action they are doing or about to do is prohibited?
Swimming on Shabbos:
Learn the גמרא דף מ: “א”ר זירא (three lines from the bottom of the Amud) until the two dots on top of דף מא.
Note the two explanations of Rashi whether having a rim around the pool permits or prohibits swimming.
Learn רי”ף and ר”ן
https://hebrewbooks.org/pdfpager.aspx?req=37953&st=&pgnum=586
Question:
What’s is the difference between Rashi first explanation and the Ran explanation of the words עקר?
Learn רמב”ם פרק כג הלכה ה
https://hebrewbooks.org/pdfpager.aspx?req=14278&st=&pgnum=105
Is the Rambam explaining like Rashi or the Ran?
Learn the מלחמת ה’
https://hebrewbooks.org/pdfpager.aspx?req=37953&st=&pgnum=587
How does the Shulchan Aruch conclude?
Learn שולחן ערוך אורח חיים ס’ של”ט סע’ ב and the משנה ברורה
https://hebrewbooks.org/pdfpager.aspx?req=60388&st=&pgnum=376
Based on the Shulchan Aruch are there swimming pools that are permissible to swim in?
Learn מגן אברהם ס’ שכ”ו ס”ק ח who cites the minhag is not to immerse in a body of water on Shabbos.
https://hebrewbooks.org/pdfpager.aspx?req=14325&st=&pgnum=181
Learn משנה ברורה ס’ שכ”ו ס”ק כד
https://hebrewbooks.org/pdfpager.aspx?req=60388&st=&pgnum=328
https://hebrewbooks.org/pdfpager.aspx?req=60388&st=&pgnum=329
Learn שו”ת תשובות והנהגות חלק א ס’ רכב
https://hebrewbooks.org/pdfpager.aspx?req=20025&st=&pgnum=161
https://hebrewbooks.org/pdfpager.aspx?req=20025&st=&pgnum=162
Rabbi Baruch Bodenheim: Gemara Shabbos: Perek Kirah, יום שלישי, Av 25, Daf 40b – 41a (08/19/25)
Very quickly review the גמרא דף מ: “א”ר יצחק בר אבדימי (middle of the wide lines) until “היכי עביד הכי”
Question:
Why is it permitted to place uncooked food in a כלי שני? Why should a כלי שני be different than a כלי ראשון if the temperature of the water is still hot enough to cook?
Learn תוס’ “ושמע מינה
Question on Tosfos:
What is the exact reason why kli sheini can not cook. Is it because the walls cool down the liquid or is it because the walls are not hot?
Would a thermos be considered a kli sheini?
Learn אגרות משה או”ח חלק א end of ס’ צה “וטעם זה
https://hebrewbooks.org/pdfpager.aspx?req=916&st=&pgnum=156
and חזון איש או”ח סוף ס’ לז
https://hebrewbooks.org/pdfpager.aspx?req=14336&st=&pgnum=114
Learn שמירת שבת כהלכתו פרק א סע’ ב אות ג & הערה ט
and קובץ הלכות שבת חלק ב פרק כה סע’ ט & הערה יח
Continue learning the גמרא דף מה: “היכי עביד הכי until “א”ר זירא ” (three lines from the bottom of the Amud)
Why is it prohibited to even think about Torah in the bath house?
Why is it permitted to tell someone in the bath house that an action they are doing or about to do is prohibited?
The next Gemara deals with the topic of swimming on Shabbos
Learn the גמרא דף מ: “א”ר זירא (three lines from the bottom of the Amud) until the two dots on top of דף מא.
Note the two explanations of Rashi whether having a rim around the pool permits or prohibits swimming.
Learn רי”ף and ר”ן
What’s is the difference between Rashi first explanation and the Ran explanation of the words עקר?
Learn רמב”ם פרק כג הלכה ה
Is the Rambam explaining like Rashi or the Ran?
Learn the מלחמת ה’
How does the Shulchan Aruch conclude?
Learn שולחן ערוך אורח חיים ס’ של”ט סע’ ב and the משנה ברורה
Learn מגן אברהם ס’ שכ”ו ס”ק ח who cites the minhag is not to immerse in a body of water on Shabbos.
Rabbi Baruch Bodenheim: Gemara Shabbos: Third Perek – Monday night shiur, Av 25 – Sugya: Heating food on Shabbos (08/18/25)
How can one heat up cold solid food from the refrigerator on Shabbos morning?
Quickly review שולחן ערוך ס’ שי”ח סע’ ז & ח
https://hebrewbooks.org/pdfpager.aspx?req=60388&st=&pgnum=277
Review מגן אברהם ס’ שי”ח ס”ק כו
https://hebrewbooks.org/pdfpager.aspx?req=14325&st=&pgnum=155
Major Questions:
How does the two opinions brought in ס’ שי”ח סע’ ז & ח fit with the ruling of the שולחן ערוך ס’ רנ”ג סע’ ג & ה?
Why does the Shulchan Aruch ס’ רנ”ג סע’ ה permit one to place a cold pot of food on top of a pot on a fire but in סע’ ג only permits חזרה?
Learn מגן אברהם ס’ רנ”ג ס”ק לג
https://hebrewbooks.org/pdfpager.aspx?req=14325&st=&pgnum=27
There is a major dispute between the דגול מרבבה and the פרי מגדים on how to explain the ruling of the שולחן ערוך with major halachic ramifications.
Learn דגול מרבבה on the מגן אברהם
https://hebrewbooks.org/pdfpager.aspx?req=7631&st=&pgnum=32
Learn פרי מגדים אשל אברהם ס”ק לג
https://hebrewbooks.org/pdfpager.aspx?req=41248&st=&pgnum=163
What is the halachic differences between the דגול מרבבה and the פרי מגדים?
Whom do we rule in accordance with?
Learn ביאור הלכה ס’ רנ”ג סע’ ג “ויזהר שלא ישים
https://hebrewbooks.org/pdfpager.aspx?req=60388&st=&pgnum=49
Is there another way to answer the difference in the Shulchan Aruch?
Learn שולחן ערוך הרב ס’ רנ”ג סע’ כו and קונטרס אחרון (on bottom) ס”ק י for a third explanation
https://hebrewbooks.org/pdfpager.aspx?req=25073&st=&pgnum=137
https://hebrewbooks.org/pdfpager.aspx?req=25073&st=&pgnum=138
https://hebrewbooks.org/pdfpager.aspx?req=25073&st=&pgnum=139
In Conclusion:
Many people have the practice of turning a pan upside down and placing cold fully cooked solid food from the refrigerator on top of the upside down pan on Shabbos morning?
Is this permitted according to the פרי מגדים?
Learn שמירת שבת כהלכתו פרק א סעיף מד & הערה קכו
And see קובץ הלכות שבת ח”ב פרק כו סע’ לד & הערה מח
Question:
If one places a pan of food on top of a soup pot which is on the blech. May one move the pan on Shabbos and place it directly on the blech?
Point to consider:
What is the status of a pot of food that is resting on top of another pot which is on the stovetop.
Is it considered on the fire which is גרוף וקטום or is it considered just סמוך לכירה ?
Bring a proof
See מגן אברהם ס’ רנ”ג ס”ק לג
https://hebrewbooks.org/pdfpager.aspx?req=14325&st=&pgnum=27
Learn שמירת שבת כהלכתו פרק א סעיף מד & הערה קכו
And see קובץ הלכות שבת ח”ב פרק כו סע’ מ & הערה נה
Question:
May one move a pot which is placed on the blech in an area which is not directly over the fire to a part of the blech which is directly over the fire?
Point to Consider:
Is the entire blech considered a stovetop which is גרוף וקטום or is it considered just סמוך לכירה ?
Bring a proof
Learn אורחת שבת ח”א פרק ב סע’ סט & ע with the footnotes
Learn אגרות משה או”ח חלק ד ס’ סא ס’ עד בישול ס”ק יב
Learn חזון איש או”ח ס’ ל”ז ס”ק י
Learn שמירת שבת כהלכתו פרק א סעיף כה & הערה קכו
And קובץ הלכות שבת ח”ב פרק כו סע’ מ & הערה נה
Rabbi Zev Wolbe: Mishna Berura Halacha Shiur – Hilchos Sukkah – Siman 638: The Sukkah and it’s Decorations are Assur all Seven Days (08/18/25)
Click on Right Side of Player to Download
Rabbi Baruch Bodenheim: Gemara Shabbos: Perek Kirah, יום שני, Av 24, Daf 40b (08/18/25)
Very quickly review the גמרא דף מ: “א”ר יצחק בר אבדימי (middle of the wide lines) until “היכי עביד הכי”
Learn the רי”ף who has a different Girsa in the third Halacha.
Learn the ר”ן who explains the difference.
https://hebrewbooks.org/pdfpager.aspx?req=37953&st=&pgnum=587
Question:
Is it permitted to place water near a fire to warm up when the fire will go out before the water heats up to יד סולדת?
Learn שולחן ערוך אורח חיים ס’ שי”ח סע’ יד & משנה ברורה ס”ק צ & צא
https://hebrewbooks.org/pdfpager.aspx?req=60388&st=&pgnum=280&hilite=
Learn אגרות משה או”ח חלק א ס’ צג
https://hebrewbooks.org/pdfpager.aspx?req=916&st=&pgnum=152
https://hebrewbooks.org/pdfpager.aspx?req=916
Learn שמירת שבת כהלכתו פרק א הערה ח
Why is the case of a timer that will shut off the electricity before the water can get hot different from heating towels?
Major Question:
Why is it permitted to place uncooked food in a כלי שני? Why should a כלי שני be different than a כלי ראשון if the temperature of the water is still hot enough to cook?
Learn תוס’ “ושמע מינה
Question on Tosfos:
What is the exact reason why kli sheini can not cook. Is it because the walls cool down the liquid or is it because the walls are not hot?
Would a thermos be considered a kli sheini?
Learn אגרות משה או”ח חלק א end of ס’ צה “וטעם זה
https://hebrewbooks.org/pdfpager.aspx?req=916&st=&pgnum=156
and חזון איש או”ח סוף ס’ לז
https://hebrewbooks.org/pdfpager.aspx?req=14336&st=&pgnum=114
Learn שמירת שבת כהלכתו פרק א סע’ ב אות ג & הערה ט
and קובץ הלכות שבת חלק ב פרק כה סע’ ט & הערה יח
Continue learning the גמרא דף מה: “היכי עביד הכי until “א”ר זירא ” (three lines from the bottom of the Amud)
Why is it prohibited to even think about Torah in the bath house?
Why is it permitted to tell someone in the bath house that an action they are doing or about to do is prohibited?
The next Gemara deals with the topic of swimming on Shabbos
Learn the גמרא דף מ: “א”ר זירא (three lines from the bottom of the Amud) until the two dots on top of דף מא
