Monthly Archive: August 2025

Quickly review the גמרא דף מ: “א”ר יצחק בר אבדימי (middle of the wide lines) until  “היכי עביד הכי” 

Do we conclude lhalacha in accordance with all three?

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

Questions:

Why is the bath considered a כלי ראשון?

Learn רש”י “בכלי שני

Learn רש”י “וש”מ הפשרו

What is Rashi adding?

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 

https://hebrewbooks.org/pdfpager.aspx?req=60388&st=&pgnum=280&hilite=

Learn אגרות משה או”ח חלק את 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

See משנה ברורה ס”ק צא

Why is the case of a timer that will shut off the electricity before the water can get hot different than 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

What is the exact reason why kli sheini can not cook. Is it because the walls cool down the liquid or is because the walls are not hot?

Would a thermos be considered a kli sheini?

Continue learning the גמרא דף מ. “היכי עביד הכי until “א”ר זירא ” (three lines from the bottom of the Amud) 

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

Learn the גמרא דף מ: “א”ר יצחק בר אבדימי (middle of the wide lines) until  “היכי עביד הכי” 

Do we conclude lhalacha in accordance with all three?

Learn the רי”ף who has a different Girsa in the third Halacha.

https://hebrewbooks.org/pdfpager.aspx?req=37953&st=&pgnum=587

Learn the ר”ן who explains the difference. 

Questions:

Why is the bath considered a כלי ראשון?

Learn רש”י “בכלי שני

Learn רש”י “וש”מ הפשרו

What is Rashi adding?

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 

https://hebrewbooks.org/pdfpager.aspx?req=60388&st=&pgnum=280&hilite=

Learn אגרות משה או”ח חלק את ס’ צג

https://hebrewbooks.org/pdfpager.aspx?req=916&st=&pgnum=152

https://hebrewbooks.org/pdfpager.aspx?req=916&st=&pgnum=153

Learn שמירת שבת כהלכתו פרק א הערה ח

See משנה ברורה ס”ק צא

Why is the case of a timer that will shut off the electricity before the water can get hot different than 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

Continue learning the גמרא דף מ. “היכי עביד הכי until “א”ר זירא ” (three lines from the bottom of the Amud) 

Halachic Conclusion 

Cooking on Shabbos Raw Fruits, Vegetables, Water & Oil

Quickly review the גמרא דף מ”: “א”ר יהודה אמר שמואל ( middle of the wide lines) until א”ר יצחק בר אבדימי 

In Conclusion:

Is the an איסור דאורייתא to cook on Shabbos fruits or vegetables which are edible raw but will be improved by cooking it?

Write out the machlokes between the Mishna Berura and Rebbe Akiva Eiger in regards to this question and how to explain the words of the Rambam 

See רמב”ם ה’ שבת פרק ט הלכה ג “המבשל על האור and מגיד משנה

https://hebrewbooks.org/pdfpager.aspx?req=14278&st=&pgnum=38

Learn שו”ע ס’ רנ”ד סע’ ד

See שער הציון ס’ שי”ח אות קיד

https://hebrewbooks.org/pdfpager.aspx?req=60388&st=&pgnum=280&hilite=

See מ”א ס’ רנ”ד ס”ק יד

https://hebrewbooks.org/pdfpager.aspx?req=14325&st=&pgnum=29

See ה’ רע”א שו”ע ס’ רנ”ד ס”ק י”ד

Note the two different ways to explain the Rambam 

See the אגלי טל אופה אות י who summarizes the two opinions 

https://hebrewbooks.org/pdfpager.aspx?req=14401&st=&pgnum=247

Learn רמב”ם ה’ שבת פרק ט הלכה ו who defines the Melacha of Bishul as softening something hard or hardening something soft through the application of heat.

https://hebrewbooks.org/pdfpager.aspx?req=14278&st=&pgnum=40

According to the Rambam why is heating water a violation of cooking?

See the אגלי טל אופה אות י ס”ק יט אות יב & י”ג

https://hebrewbooks.org/pdfpager.aspx?req=14401&st=&pgnum=248

Clarify the argument between the שער הציון and the אגלי טל explanation for Rebbe Akiva Eiger why water which is drinkable at room temperature is a violation of cooking.

Continue learning 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.

https://hebrewbooks.org/pdfpager.aspx?req=37953&st=&pgnum=587

Learn the ר”ן who explains the difference. 

Learn תוס’ “ושמע מינה

Halachic Conclusion:

Why is heating water a violation of cooking?

Is it permitted to cook fruits or vegetables which are edible raw on Shabbos?

Learn רמב”ם ה’ שבת פרק ט הלכה ג “המבשל על האור

https://hebrewbooks.org/pdfpager.aspx?req=14278&st=&pgnum=38

and מגיד משנה

Major Question:

Why is heating water a violation of cooking according to the Rambam as water is edible raw?

Learn שו”ע ס’ רנ”ד סע’ ד

How could the Shulchan Aruch rule that one who cooks fruit or vegetables which are edible raw is violating the melacha of cooking on Shabbos when the Rambam clearly rules one is not in violation?

Learn שער הציון ס’ שי”ח אות קיד

https://hebrewbooks.org/pdfpager.aspx?req=60388&st=&pgnum=280&hilite=

See מ”א ס’ רנ”ד ס”ק יד

https://hebrewbooks.org/pdfpager.aspx?req=14325&st=&pgnum=29

Learn ה’ רע”א שו”ע ס’ רנ”ד ס”ק י”ד

Note the two different ways to explain the Rambam 

Learn אגלי טל אופה אות י & ס”ק יט אות יב – י”ג

https://hebrewbooks.org/pdfpager.aspx?req=14401&st=&pgnum=248

Who gives an explanation why heating water is a violation of cooking.

Very quickly review the גמרא דף מ: “ת”ר מביא אדם until איבעיא להו”

Learn the גמרא דף מ: “איבעיא להו

until א”א יצחק בר אבדימי (middle of the wide lines)

There are three opinions in regards to heating oil on Shabbos. 

Major Questions:

How is it possible to say that one who cooks oil does not violate cooking on Shabbos?

Why would warming oil to lukewarm temperature be considered cooking?

According to רשב”ג that there is cooking by oil and even warming up the oil is considered cooking why is it permitted to lather ones hands with oil and hold it near a fire?

Learn רמב”ם ה’ שבת פרק ט הלכה ג “המבשל על האור

https://hebrewbooks.org/pdfpager.aspx?req=14278&st=&pgnum=38

and מגיד משנה

Learn פני יהושע דף מ: רש”י “ואתי ר”ש למימר

https://hebrewbooks.org/pdfpager.aspx?req=14633&st=&pgnum=138

Learn ראש יוסף דף מ:  “והנה ראיתי לספר חמד משה until עוד אבאר

https://hebrewbooks.org/pdfpager.aspx?req=40668&st=&pgnum=161

Is it prohibited to cook fruits or vegetables which are edible raw on Shabbos?

See רמב”ם ה’ שבת פרק ט הלכה ג “המבשל על האור

https://hebrewbooks.org/pdfpager.aspx?req=14278&st=&pgnum=38

and מגיד משנה

Learn שו”ע ס’ רנ”ד סע’ ד

How could the Shulchan Aruch rule that one who cooks fruit or vegetables which are edible raw is violating the melacha of cooking on Shabbos when the Rambam clearly rules one is not in violation?

Learn שער הציון ס’ שי”ח אות קיד

See מ”א ס’ רנ”ד ס”ק יד

Learn ה’ רע”א שו”ע ס’ רנ”ד ס”ק י”ד 

Learn אגלי טל אופה אות י & ס”ק יט אות יב – י”ג