Category: Gemara

Rabbi Baruch Bodenheim: Gemara Shabbos: Perek Kirah, יום שני, Cheshvan 19, Daf 42a – 42b Sugya – Kli Rishon/Sheini (11/10/25)

Special shout out to Bruce Goldberg and Dr Cohen for sending in their summary of the previous Sugya. Please give yourself the greatest gift, the feeling of joy of clarity and accomplishment, by writing a summary of the last Sugya.Learn משנה דף מב (bottom of the Amud) and the גמרא מב: איבעיא until “סבר רב יוסף”

Questions:

What is the reason that רבי יהודה would be lenient and permit placing items in a Kli Rishon except if it has brine?

What is the reason that רבי יהודה would be stringent and prohibit placing items in a Kli Sheini that has brine?

Does this prohibition apply to all food items?

Learn תוס’ “לכל

The Mishna delineates difference between a Kli Rishon and a Kli Sheini. 

What is the Halacha in regards to pouring liquids from a Kli Rishon on to a food item?

Learn תוס’ “אבל

Rabbi Baruch Bodenheim: Gemara Shabbos: Perek Kirah, יום שלישי, Cheshvan 13, Daf 42a Sugya – Kli Sheini (11/04/25)

Please continue writing a summary of the Sugya 

Very quickly review the גמרא דף מב. “אמר רב הונא בריה דרב יהושע (eight lines from the bottom of the Amud) until the Mishna 

Do we conclude lhalacha like Bais Hillel or like ר’ שמעון בן מנסיא?

Review “תוס’ “מי

Learn רי”ף 

Learn ר”ן starting from “ומסקנא until the Mishna 

Is it permitted to immerse a flask of water inside a Kli Rishon?

Answer based on תוס’ “שאני and the Ran.

Bottom line Halacha

May one pour cold water into a Kli Sheini?

(Do we conclude like Bais Hillel or like ר’ שמעון בן מנסיא?)

Is the Halacha more stringent if the Kli Sheini is a bath?

(Is the bath in the Gemara a Kli Rishon or a Kli Sheini?)

May one pour hot water from a Kli Rishon into cold water?

(See machlokes between Tosfos and the Ran)

Is the Halacha more stringent if the Kli Rishon is a bath?

(Is ר’ שמעון בן מנסיא commenting on the Reisha or the Seifa?)

May one pour an abundance of cold water into a Kli Rishon which the water will turn lukewarm because of the abundance of cold water being poured in? 

Is the Halacha more stringent if the Kli Rishon is a bath?

(See machlokes between Tosfos and the Ran)

Learn שו”ע או”ח ס’ שי”ח סע’ יא & יב with the משנה ברורה  

Can one pour hot water from a Kli Rishon into a cold glass of lemonade?

A glass of tea essence?

Learn ביאור הלכה “והוא

https://hebrewbooks.org/pdfpager.aspx?req=60388&st=&pgnum=279

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

Rabbi Baruch Bodenheim: Gemara Shabbos: Borer – Monday night shiur, Cheshvan 13 – Daf 74a – Scattering (11/03/25)

earn רמב”ם הלכות שבת פרק ח הלכה יג

What is the difference between Tosfos תוס’ “והתניא and the Rambam?

See ביאור הלכה ס’ שי”ט סע’ א “ובורר

Learn גמרא שבת דף עד. “כי אתא רב דימי” (eight lines from bottom of the Amud) until “חזקיה 

Questions:

What is the reason to suggest it is prohibited to remove good from the bad when serving to the guests immediately?

Learn תוס’ “אלא ידענא

Clarify why according to Tosfos it might possibly be prohibited. 

What is the uncertainty?

Learn מהר”ם who asks a question on Tosfos 

Learn ח’ ב”ח for a different explanation as to why remove good from the bad when serving to the guests immediately could possibly be prohibited.

Learn רש”י “ושדא קמייהו  

Rashi says the fruit was mixed with leaves and by spreading it out on the table the fruit separated from the leaves automatically. 

Why according to Rashi is there a potential issue of borrer? 

Is this the same explanation of Tosfos?

Learn מהרש”א who asks on Rashi – Why is it permitted to scatter the contents causing the fruit to become unmixed. Why isn’t this considered Borer as the objective of Borer was accomplished – separating the fruit from the leaves? 

Is this also a question according to the Ramban?

Halachic Conclusion:

Is it permitted to cause a mixture to become unmixed by scattering the mixture?

Learn אגרות משה או”ח חלק ד ס’ עד בורר ס”ק יא

Learn שמירת שבת כהלכתו פרק ג הערה ו

See איל משולש פרק ט הערה פה

See קובץ הלכות פרק כז סע’ ו

Rabbi Baruch Bodenheim: Gemara Shabbos: Perek Kirah, יום שני, Cheshvan 12, Daf 42a Sugya – Kli Sheini (11/03/25)

I was so excited to receive a summary yesterday of the Sugya we are completing by Dr. Cohen. 

Please write a summary of 

  • The argument between Bais Hillel and Bais Shammai. 
  • The different reasons (Rashi, Tosfos, Ran) why it is permitted to pour hot water from a Kli Rishon into a cup of cold water. 
  • The different explanations (Rashi, Tosfos, Ran, Rashba) whether אמבטיה is a Kli Rishon or Kli Sheini and why it is forbidden according to everyone to pour cold water into a hot אמבטיה.
  • List a stringency and leniency according to the Ran and according to the Tosfos.

Do we conclude lhalacha like Bais Hillel or like ר’ שמעון בן מנסיא?

Review “תוס’ “מי

Learn רי”ף 

Learn ר”ן  

Learn the גמרא דף מב. “אמר רב הונא בריה דרב יהושע (eight lines from the bottom of the Amud) until the Mishna 

Learn תוס’ “נותן

Learn תוס’ “שאני

Bottom line Halacha 

Learn שו”ע או”ח ס’ שי”ח סע’ יא & יב with the משנה ברורה  

Learn ביאור הלכה “והוא

Rabbi Baruch Bodenheim: Gemara Shabbos: Perek Kirah, יום חמישי, Cheshvan 8, Daf 42a Sugya – Kli Sheini (10/30/25)

Write a summary of the argument between Bais Hillel and Bais Shammai. 

List the different reasons (Rashi, Tosfos, Ran) why it is permitted to pour hot water from a Kli Rishon into a cup of cold water. 

Write a summary of the difference explanations (Rashi, Tosfos, Ran, Rashba) whether אמבטיה is a Kli Rishon or Kli Sheini and why it is forbidden according to everyone to pour cold water into a hot אמבטיה.

List a stringency and leniency according to the Ran

List a stringency and leniency according to the Tosfos

Very quickly review the גמרא דף מב. “סבר רב יוסף למימר until אמר רב הונא בריה דרב יהושע (eight lines from the bottom of the Amud)

Do we conclude lhalacha like Bais Hillel or like ר’ שמעון בן מנסיא?

Learn תוס’ “מי

Learn ריף 

Learn ר”ן  

Learn the גמרא דף מב. “אמר רב הונא בריה דרב יהושע (eight lines from the bottom of the Amud) until the Mishna 

Learn תוס’ “נותן

Learn תוס’ “שאני

Bottom line Halacha 

Learn ערוך אורח חיים ס’ שי”ח סע’ יא & יב with the משנה ברורה  

Learn ביאור הלכה “והוא

Rabbi Baruch Bodenheim: Gemara Shabbos: Perek Kirah, יום רביעי, Cheshvan 7, Daf 42a Sugya – Kli Sheini (10/29/25)

Please see write out the argument between Bais Hillel and Bais Shammai. Where they agree and where they argue, the difference between a cup and a bath. 

Quickly review the גמרא דף מב. “סבר רב יוסף למימר until אמר רב הונא בריה דרב יהושע (eight lines from the bottom of the Amud)

Tosfos (תוס’ “אבל) explains the אמבטיה in the Halacha of our Gemara is a Kli Sheini. 

Bring a proof from Rashi whether the bath is a Kli Rishon or a Kli Sheini 

See שער הציון ס’ שי”ח אות קה 

According to the Ran is the אמבטיה a Kli Rishon or a Kli Sheini?

https://hebrewbooks.org/pdfpager.aspx?req=37953&st=&pgnum=588

https://hebrewbooks.org/pdfpager.aspx?req=37953&st=&pgnum=589

The Ran says a chidush lhalacha that it is prohibited to pour an abundance of cold water into a bath that is a Kli Rishon.  Why?

Learn רשב”א דף מב. “נותן אדם 

Note that line towards the end “אבל באמבטיה שעומדים לרחיצה ”  

How is the Rashba different than the other explanations of the Rishonim?

Do we conclude lhalacha like Bais Hillel or like ר’ שמעון בן מנסיא?

Learn תוס’ “מי

Learn ריף 

Learn ר”ן  

Continue learning the Gemara until the Mishna 

Rabbi Baruch Bodenheim: Gemara Shabbos: Perek Kirah, יום שלישי, Cheshvan 6, Daf 42a Sugya – Kli Sheini (10/28/25)

Quickly review the “גמרא דף מב. “סבר רב יוסף למימר until אמר רב הונא בריה דרב יהושע (eight lines from the bottom of the Amud)

Review “תוס’ “אבל

Tosfos explains the אמבטיה in the Halacha of our Gemara is a Kli Sheini. 

Why is it forbidden to pour cold water into the bath if it’s a Kli Sheini?

According to Tosfos – Why does everyone agree it is forbidden to pour cold water into a bath – Kli Sheini – of hot water as a gezaira to prevent one from pouring into a Kli Rishon, yet to pour cold water into a cup which is a Kli Sheini is a dispute between Beis Shammai and Bais Hillel if we make a Gezaira?

Bring a proof from Rashi whether the bath is a Kli Rishon or a Kli Sheini 

Write out the Sugya 

Continue learning the Gemara until the Mishna 

Rabbi Baruch Bodenheim: Gemara Shabbos: Perek Kirah, יום שני, Cheshvan 5, Daf 42a Sugya – Kli Sheini (10/27/25)

Learn the גמרא דף מב. “סבר רב יוסף למימר until אמר רב הונא בריה דרב יהושע (eight lines from the bottom of the Amud)

Review תוס’ “אבל

Tosfos explains the אמבטיה in the Halacha of our Gemara is a Kli Sheini. 

Why is it forbidden to pour cold water into the bath if it’s a Kli Sheini?

According to Tosfos – Why does everyone agree it is forbidden to pour cold water into a bath – Kli Sheini – of hot water as a gezaira to prevent one from pouring into a Kli Rishon, yet to pour cold water into a cup which is a Kli Sheini is a dispute between Beis Shammai and Bais Hillel if we make a Gezaira?

Bring a proof from Rashi whether the bath is a Kli Rishon or a Kli Sheini 

Review רי”ף

Review ר”ן 

https://hebrewbooks.org/pdfpager.aspx?req=37953&st=&pgnum=588

https://hebrewbooks.org/pdfpager.aspx?req=37953&st=&pgnum=589

In what way is the Ran’s explanation of the Gemara different than the explanation of Tosfos – תוס’ “נותן? 

Is it permitted to pour an abundance of cold water into a bath that is a Kli Rishon? 

How do we conclude according to halacha?

Learn תוס’ “נותן אדם (second to last Tosfos)

Rabbi Baruch Bodenheim: Gemara Shabbos: Perek Kirah, יום חמישי, Rosh Chodesh Cheshvan II, Daf 42a Sugya – Kli Sheini (10/23/25)

Gutten Chodesh 

Learn the גמרא דף מב. “סבר רב יוסף למימר until אמר רב הונא בריה דרב יהושע (eight lines from the bottom of the Amud)

Review תוס’ “אבל

Tosfos explains the אמבטיה in the Halacha of our Gemara is a Kli Sheini. 

Why is it forbidden to pour cold water into the bath if it’s a Kli Sheini?

Bring a proof from Rashi whether the bath is a Kli Rishon or a Kli Sheini 

Tosfos – תוס’ “נותן have a new explanation to the case of חמין לתוך צונן & צונן לתוך חמין different than Rashi. 

Rashi – dependant on the cup that is being poured into as that is תתאה גבר 

Tosfos – it is not dependent on תתאה גבר. Rather it’s dependant on volume. According to Bais Shammai if the hot water has a larger volume than the cold water than it is prohibited to mix the them. 

Learn רי”ף

Learn ר”ן 

https://hebrewbooks.org/pdfpager.aspx?req=37953&st=&pgnum=588

https://hebrewbooks.org/pdfpager.aspx?req=37953&st=&pgnum=589

In what way is the Ran’s explanation of the Gemara different than the explanation of Tosfos? 

Is it permitted to pour an abundance of cold water into a bath that is a Kli Rishon? 

Rabbi Baruch Bodenheim: Gemara Shabbos: Borer -Wednesday night shiur, Rosh Chodesh Cheshvan (10/22/25)

Very quickly review גמרא שבת דף עד. “ת”ר היו לפניו until “כי אתי רב דימי”

There are five different opinions for the explanations of the Braissa. 

The first four opinions are seemingly rejected. 

What is the basis and reasoning of each of those opinions to resolve the question being asked of them?

To explain עולא – Learn ריטב”א חדשים “ה”ק

To explain רב חסדא – Learn תוס’ “וכי

To explain רב המנונא – Learn תוס’ דף עד. “מתקיף

Learn ריטב”א 

In conclusion what conditions are necessary to permit one to select?

Learn ר”ן על גמרא דף עד “ונמצא פסקו של דברים 

Learn רמב”ם הלכות שבת פרק ח הלכה יג

Learn שולחן ערוך אורח חיים ס’ שי”ט סע’ א-ג

What is the difference between Tosfos and the Rambam?

Learn ביאור הלכה ס’ שי”ט סע’ א “ובורר