Online Shiurim

Author: admin

Evening Chabura / Gemara / Halacha / Rabbi Baruch Bodenheim's shiurim / Shabbos / Shabbos

 by 

Rabbi Baruch Bodenheim: Gemara Shabbos: Borer – Wednesday night shiur, Cheshvan 29 – Daf 74a – Non Food Items (11/19/25)

Does the Melacha of Borer apply to non-food items?

Learn ט”ז ס’ שי”ט ס”ק יב who brings a proof from Rashi ( חביתא and “רש”י דף עד: “שבע)

and Tosfos ( תוס’ דף עד. “היו ) that the prohibition of Borer applies to non-food items. 

Learn אור שמח ה’ שבת פרק יא הלכה ח who argues on the Taz

Clarify what is the logic of the Ohr Somayach I ass to why Borer is not relevant to non-food items. 

See “ספר חוט השני שבת פרק כה “בורר באוכלים, וכלים, בגדים who explains the Ohr Somayach is saying two novel ideas. 

Learn ערוך השולחן אורח חיים ס’ שי”ט סע’ ז-ט who discusses the ideas of the Ohr Somayach but challenges them. 

Learn קובץ הלכות שבת פרק כז סע’ ג & הערה ה who explains the principle of the Ohr Somayach 

What’s the Halachic Conclusion?

Learn משנה ברורה ס’ שי”ט ס”ק טו

And אגרות משה או”ח חלק ד ס’ עד בורר ס”ק י & יב 

See שמירת שבת כהלכתה פרק ג סע’ כח & הערה ע”ה

Would selecting a Sefer from a bookcase be an issue of Borer?

See אורחת שבת חלק א פרק ג סע’ כג

Rabbi Baruch Bodenheim mareh mekomos for borer sugya week of november 17 2025Download

Gemara / Rabbi Baruch Bodenheim's shiurim / Shabbos

 by 

Rabbi Baruch Bodenheim: Gemara Shabbos: Perek Kirah, יום רביעי, Cheshvan 28, Daf 42b Sugya – Kli Rishon/Sheini (11/19/25)

Learn גמרא דף מב: “סבר רב יוסף (eight lines from top of the Amud) until the Mishna 

How do we conclude?

Is it permitted to place salt in a Kli Rishon? Kli Sheini?

Learn תוס’ “והיינו דר”נ 

Learn רי”ף  & ר”ן 

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

Learn רא”ש ס’ י”ז

https://hebrewbooks.org/pdfpager.aspx?req=37953&st=&pgnum=355

In conclusion 

What items cook in a Kli Rishon? 

What items cook in a Kli Sheini?

Learn שולחן ערוך אורח חיים ס’ שי”ח סע’ ט and the משנה ברורה 

https://hebrewbooks.org/pdfpager.aspx?req=60388&st=&pgnum=278

Gemara / Rabbi Baruch Bodenheim's shiurim / Shabbos

 by 

Rabbi Baruch Bodenheim: Gemara Shabbos: Perek Kirah, יום שלישי, Cheshvan 27, Daf 42b Sugya – Kli Rishon/Sheini (11/18/25)

Practical Halacha 

How do we conclude in regards to עירוי כלי ראשון ?

Learn שולחן ערוך אורח חיים ס’ שי”ח סע’ ד (focus on the end from אבל מדיחין) 

https://hebrewbooks.org/pdfpager.aspx?req=60388&st=&pgnum=273

https://hebrewbooks.org/pdfpager.aspx?req=60388&st=&pgnum=274

https://hebrewbooks.org/pdfpager.aspx?req=60388&st=&pgnum=275

Shulchan Aruch rules that it is permitted to pour hot water on top of an uncooked item. 

Is this pouring from a Kli Rishon or a Kli Sheini?

See משנה ברורה ס”ק לה

Why?

Learn שולחן ערוך אורח חיים ס’ שי”ח סע’ י

https://hebrewbooks.org/pdfpager.aspx?req=14325&st=&pgnum=156

See ט”ז ס”ק טז

And מגן אברהם ס”ק לב 

https://hebrewbooks.org/pdfpager.aspx?req=14325&st=&pgnum=157

See פרי מגדים אשל אברהם ס”ק לב

https://hebrewbooks.org/pdfpager.aspx?req=41248&st=&pgnum=204

Learn גמרא דף מב: “סבר רב יוסף (eight lines from top of the Amud) until the Mishna 

How do we conclude?

Is it permitted to place salt in a Kli Rishon? Kli Sheini?

Learn תוס’ “והיינו דר”נ 

Learn רי”ף  & ר”ן 

Learn רא”ש ס’ י”ז

In conclusion 

What items cook in a Kli Rishon? 

What items cook in a Kli Sheini?

Evening Chabura / Gemara / Halacha / Rabbi Baruch Bodenheim's shiurim / Shabbos / Shabbos

 by 

Rabbi Baruch Bodenheim: Gemara Shabbos: Borer – Monday night shiur, Cheshvan 27 – Daf 74a – Non Food Items (11/17/25)

Does the Melacha of Borer apply to non-food items?

See “גמרא דף עד: “אמר רבא הרי מאן דעביד חביתא and “רש”י “שבע חטאות

Review “גמרא שבת דף עד. “ת”ר היו לפניו מיני אוכלים 

Review “תוס’ “היו

Learn ט”ז ס’ שי”ט ס”ק יב who brings a proof from Rashi and Tosfos that the prohibition of Borer applied to non-food items. 

Learn אור שמח ה’ שבת פרק יא הלכה ח who argues on the Taz

Clarify what is the logic of the Ohr Somayach as to why Borer is not relevant to non-food items. 

See “ספר חוט השני שבת פרק כה “בורר באוכלים, וכלים, בגדים who explains the Ohr Somayach is saying two novel ideas. 

Learn ערוך השולחן אורח חיים ס’ שי”ט סע’ ז-ט who discusses the ideas of the Ohr Somayach but challenges them. 

Learn קובץ הלכות שבת פרק כז סע’ ג & הערה ה who explains the principle of the Ohr Somayach 

What’s the Halachic Conclusion?

Learn משנה ברורה ס’ שי”ט ס”ק טו

And אגרות משה או”ח חלק ד ס’ עד בורר ס”ק י & יב 

See שמירת שבת כהלכתה פרק ג סע’ כח & הערה ע”ה

Would selecting a Sefer from a bookcase be an issue of Borer?

See אורחת שבת חלק א פרק ג סע’ כג

Rabbi Baruch Bodenheim mareh mekomos for borer sugya week of november 17 2025Download

Gemara / Rabbi Baruch Bodenheim's shiurim / Shabbos

 by 

Rabbi Baruch Bodenheim: Gemara Shabbos: Perek Kirah, יום שני, Cheshvan 26, Daf 42b Sugya – Kli Rishon/Sheini (11/17/25)

We learnt Tosfos (תוס’  דף מב: “אבל) who brings a machlokes Rishonim whether liquids being poured from a Kli Rishon have a status of Kli Rishon or Kli Sheini – עירוי כלי ראשון ככלי ראשון או ככלי שני. 

List the three opinions quotes in Tosfos

Review אגלי טל מלאכה אופה ס”ק ל”א אות א who lists a fourth opinion (Rabbeinu Yonah). 

And how he explains each Rishon refutes the proof against them.

https://hebrewbooks.org/pdfpager.aspx?req=14401&st=&pgnum=255

https://hebrewbooks.org/pdfpager.aspx?req=14401&st=&pgnum=256

Practical Halacha 

How do we conclude in regards to עירוי כלי ראשון ?

Learn שולחן ערוך אורח חיים ס’ שי”ח סע’ ד (focus on the end from אבל מדיחין) 

Shulchan Aruch rules it is permitted to pour hot water on top of an uncooked item. 

Is this a pouring from a Kli Rishon or a Kli Sheini?

See משנה ברורה ס”ק לה

Why?

Learn שולחן ערוך אורח חיים ס’ שי”ח סע’ י

See ט”ז ס”ק טז

And מגן אברהם ס”ק לב 

See פרי מגדים אשל אברהם ס”ק לב

Learn גמרא דף מב: “סבר רב יוסף (eight lines from top of the Amud) until the Mishna 

Learn תוס’ “והיינו דר”נ 

Gemara / Rabbi Baruch Bodenheim's shiurim / Shabbos

 by 

Rabbi Baruch Bodenheim: Gemara Shabbos: Perek Kirah, יום חמישי, Cheshvan 22, Daf 42b Sugya – Kli Rishon/Sheini (11/13/25)

Tosfos (תוס’  דף מב: “אבל) presented a machlokes between the Rashbam and the Ri/Rabbeinu Tam whether liquids being poured from a Kli Rishon have a status of Kli Rishon or Kli Sheini – עירוי כלי ראשון ככלי ראשון או ככלי שני. 

Review the משנה דף לט and learn תוס’ דף לט “כל in regards to what is permitted to pour hot liquids from a Kli Rishon and what is permitted to be placed inside a Kli Shieni. 

The Rishonim discuss this machlokes at length and bring different proofs 

See ר”ן & רא”ש (they are lengthy – see it quickly to get an overview)

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

https://hebrewbooks.org/pdfpager.aspx?req=37953&st=&pgnum=355

Learn אגלי טל מלאכה אופה ס”ק ל”א אות א who lists the three opinions brought in Tosfos and an additional fourth opinion (Rabbeinu Yonah). See how he explains each one answers the proofs against them. 

https://hebrewbooks.org/pdfpager.aspx?req=14401&st=&pgnum=255

https://hebrewbooks.org/pdfpager.aspx?req=14401&st=&pgnum=256

Gemara / Rabbi Baruch Bodenheim's shiurim / Shabbos

 by 

Rabbi Baruch Bodenheim:  Gemara Shabbos: Perek Kirah, יום רביעי, Cheshvan 21, Daf 42b Sugya – Kli Rishon/Sheini (11/12/25)

Quickly review גמרא מב: איבעיא until “סבר רב יוסף”

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

What is the status of liquids while they are being poured from a Kli Rishon?

Learn תוס’ “אבל who brings a machlokes whether they have a status of Kli Rishon or Kli Sheini – עירוי כלי ראשון ככלי ראשון או ככלי שני 

What is the basis for the opinion that it has the status of Kli Rishon?

What is the basis for the opinion that it has the status of Kli Sheini?

List the proofs for each position 

The Rishonim discuss this machlokes at length and bring different proofs 

See ר”ן

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

& רא”ש

https://hebrewbooks.org/pdfpager.aspx?req=37953&st=&pgnum=355

(they are lengthy – see it quickly to get an overview)

In conclusion there are four opinions 

Learn אגלי טל מלאכה אופה ס’ ל”א ס”ק א who lists all four and how each opinion answers the proofs against them.

https://hebrewbooks.org/pdfpager.aspx?req=14401&st=&pgnum=255

https://hebrewbooks.org/pdfpager.aspx?req=14401&st=&pgnum=256

Gemara / Rabbi Baruch Bodenheim's shiurim / Shabbos

 by 

Rabbi Baruch Bodenheim: Gemara Shabbos: Perek Kirah, יום שלישי, Cheshvan 20, Daf 42a – 42b Sugya – Kli Rishon/Sheini (11/11/25)

Review משנה דף מב (bottom of the Amud) and the גמרא מב: איבעיא until “סבר רב יוסף”

The Gemara concluded that רבי יהודה permit placing items in a Kli Rishon except if it has brine

Review תוס’ “לכל
Question:
Why is this permission limited to spices?

The Mishna delineates difference between a Kli Rishon and a Kli Sheini.
What is the status of liquids while they are being poured from a Kli Rishon?

Bring a proof from the Mishna

Learn תוס’ “אבל who brings a machlokes whether they have a status of Kli Rishon or Kli Sheini – עירוי כלי ראשון ככלי ראשון או ככלי שני

What is the basis for the opinion that it has the status of Kli Rishon?
What is the basis for the opinion that it has the status of Kli Sheini?
List the proofs for each position

Gemara / Rabbi Baruch Bodenheim's shiurim / Shabbos

 by 

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

Gemara / Rabbi Baruch Bodenheim's shiurim / Shabbos

 by 

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

Evening Chabura / Gemara / Halacha / Rabbi Baruch Bodenheim's shiurim / Shabbos / Shabbos

 by 

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

Gemara / Rabbi Baruch Bodenheim's shiurim / Shabbos

 by 

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