Category: Shabbos

Rabbi Baruch Bodenheim: Gemara Shabbos: Perek Kirah: Muktza יום שלישי, Rosh Chodesh Adar Day 1 (02/17/26)

Very quickly review the גמרא דף מג. “רב יוסף אמר until “ר’ יצחק אומר “

Learn גמרא קנ”ד: “הגיע לחצר חיצונה until תניא ר”ש בן יוחי אומר

https://hebrewbooks.org/shas.aspx?mesechta=2&daf=154b&format=pdf

According to רב יוסף may one be מבטל כלי for part of Shabbos?

Bring a proof from our Gemara that ביטל כלי לשעה is prohibited

Learn ר”ן & בעל המאור דף קנ”ד עמ’ ב

https://hebrewbooks.org/pdfpager.aspx?req=37953&st=&pgnum=682

Review תוס’ דף מג. “טבל

Bring a proof from Tosfos if ביטל כלי לשעה is permitted?

What is the reason of the Rishonim that ביטל כלי לשעה would be permitted?

Learn ה’ אשרי על רא”ש ס’ יח

What extra chidushim do we learn from the Haghas Ashri

Rabbi Baruch Bodenheim: Gemara Shabbos: Borer – Monday night shiur, Rosh Chodesh Adar – Peeling fruits and vegetables (02/16/26)

Is it permitted to peel fruits and vegetables?

Learn בית יוסף אורח חיים סוף ס’ שכ”א 

And רמ”א סוף סע” י”ט “אסור לקלוף   

And the משנה ברורה ס”ק פג

Why is it permitted to peel fruits and vegetables? Why isn’t it considered removing the bad from the good which is Borer?

Learn ביאור הלכה “לקלוף 

Would it be permitted to peel apples to eat at later time?

Learn מגן אברהם ס’ שכ”א ס”ק ל

And פרי מגדים אשל אברהם ס”ק ל

And משנה ברורה ס”ק פד

And שער הציון אות צז

How do we conclude lhalacha?

Is it permitted to remove the chicken skin from a piece of baked chicken to eat at a later time?

Learn אגרות משה אורח חיים חלק ד ס’ עד בורר אות ח

Learn שמירת שבת כהלכתו פרק ג סע’ לד 

See הערה צ

Learn קובץ הלכות שבת פרק כז סע’ סג 

See הערה אות עח

Rabbi Baruch Bodenheim: Gemara Shabbos: Perek Kirah: Muktza יום שני, Shevat 29 (02/16/26)

Review the גמרא דף מג. “רב יוסף אמר until “ר’ יצחק אומר “

Learn תוס’ “טבל

According to רב יוסף may one be מבטל כלי for part of Shabbos?

Bring a proof from Tosfos. 

Learn גמרא קנ”ד: “הגיע לחצר חיצונה until תניא ר”ש בן יוחי אומר

Learn ר”ן & בעל המאור דף קנ”ד עמ’ ב

Rabbi Baruch Bodenheim: Gemara Shabbos: Perek Kirah: Muktza יום חמישי, Shevat 25 (02/12/26)

Review the גמרא דף מג. “רב יוסף אמר until “ר’ יצחק אומר “

Learn תוס’ “טבל

According to רב יוסף may one be מבטל כלי for part of Shabbos?

Bring a proof from Tosfos. 

Learn גמרא קנ”ד: “הגיע לחצר חיצונה until תניא ר”ש בן יוחי אומר

Learn ר”ן & בעל המאור דף קנ”ד עמ’ ב

Rabbi Baruch Bodenheim: Gemara Shabbos: Borer – Wednesday night shiur, Shevat 25 – Peeling fruits and vegetables (02/11/26)

Is it permitted to peel fruits and vegetables?

Learn בית יוסף אורח חיים סוף ס’ שכ”א 

And  רמ”א סוף סע” י”ט “אסור לקלוף   

And the משנה ברורה ס”ק פג

Why is it permitted to peel fruits and vegetables? Why isn’t it considered removing the bad from the good which is Borer?

Learn ביאור הלכה “לקלוף 

Is it permitted to peel apples to eat at later time?

Learn מגן אברהם ס’ שכ”א ס”ק ל

And פרי מגדים אשל אברהם ס”ק ל

And משנה ברורה ס”ק פד

How do we conclude lhalacha?

Learn אגרות משה אורח חיים חלק ד ס’ עד בורר אות ח

Rabbi Baruch Bodenheim: Gemara Shabbos: Perek Kirah: Muktza יום רביעי, Shevat 24 (02/11/26)

Review the גמרא דף מג. “רב יוסף אמר until “איתיביה אביי “

Question:

Why is it prohibited to be מבטל כלי מהיכנו? 

Rashi on the משנה דף מב עמ’ ב said its its as if you are sementing the kli to the ground by immobilizing it and that is similar to a Melacha

Learn תוס’ דף מג. “דמבטל who quotes רש”י קנד: “והוא מבטל כלי (seventh narrow line) who says it is similar to Soser – destroying Rashi on דף מג says because you are making the Kli, Muktzah 

What are the different נפקא מיניה between them?

Learn רא”ש יוסף דף מג. & פרי מגדים ס’ רס”ה משבצות זהב ס”ק א

https://hebrewbooks.org/pdfpager.aspx?req=41248&st=&pgnum=169&hilite=

Learn גמרא דף קנד: “הגיע לחצר  (two dots three lines from the top of the amud)

Learn תוס’ “טבל

Continue learning the גמרא דף מג. “איתיביה אביי until תא שמע (third wide line)

How is the reason of ר’ יצחק different than רבה?

Rabbi Baruch Bodenheim: Gemara Shabbos: Perek Kirah: Muktza יום שלישי, Shevat 23 (02/10/26)

Learn ראש יוסף דף מב: “הצלה מצויה who explains how the four machlokes Rashi and Tosfos on דף מב עמ’ ב are all connected. 

https://hebrewbooks.org/pdfpager.aspx?req=40668&st=&pgnum=172

Very quickly review גמרא דף מב: “איתיביה אביי  until דף מג. “רב יוסף אמר

Learn the גמרא דף מג. “רב יוסף אמר  until “איתיביה אביי “

Question:

What is the explanation of רב יוסף of the Halacha of רב חסדא ?

Learn תוס’ דף מג. “דמבטל

Is this the same reason as Rashi?

Learn רש”י קנד: “והוא מבטל כלי (seventh narrow line) 

How many reasons do we have to explain this halacha?

What are the different נפקא מיניה between them?

Learn רא”ש יוסף דף מג. & פרי מגדים ס’ רס”ה משבצות זהב ס”ק א

https://hebrewbooks.org/pdfpager.aspx?req=41248&st=&pgnum=169&hilite=

Continue learning the גמרא דף מג. “איתיביה אביי until תא שמע (third wide line)

How is the reason of ר’ יצחק different than רבה?

Rabbi Baruch Bodenheim: Gemara Shabbos: Borer – Monday night shiur, Shevat 23 – Washing and cleaning fruit and vegetables (02/09/26)

Quickly review משנה דף קמ. “אין שורין 

Is the Girsa שורין or שולין?

What’s the difference between the two?

Review ט”ז ס’ שי”ט ס”ק ה

See מ”א ס”ק ט 

And the Pri Megadim

And מחצית השקל 

What’s the chidush of this prohibition?

Is it permitted to wash and rinse off fruits and vegetables on Shabbos?

Is washing off the dirt a Mdoraissa violation of Borer or Mdrabanan?

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

And משנה ברורה 

Learn the גמרא ביצה דף יד 

See ביאור הלכה “הוי ליה כבורר

Based on the above how would someone be able to rinse fruit or vegetables on Shabbos?

Would it matter how dirty the fruits and vegetables are?

Learn אגרות משה אורח חיים חלק א ס’ קכ”ה

Rabbi Baruch Bodenheim: Gemara Shabbos: Perek Kirah: Muktza יום שני, Shevat 22 (02/09/26)

Very quickly review the גמרא דף מב עמוד ב until .דף מג “איתיביה אביי (eighth line from top of the Amud) 

Clarify and list the machlokes Rashi and Tosfos we learnt on דף מב עמ’ ב 

#2 תוס’ “ואם #1″‘ תוס’ “הצלה”‘ תוס’ “ואם”

What is the connection between all of them?

Learn ראש יוסף  דף מב: “הצלה מצויה

https://hebrewbooks.org/pdfpager.aspx?req=40668&st=&pgnum=172

What is the explanation of רב יוסף of the Halacha of רב חסדא ?

Learn תוס’ דף מג. “דמבטל”

Is this the same reason as Rashi?

Learn רש”י קנד: which seems to say another reason

How many reasons do we have to explain this halacha?

What are the different נפקא מיניה between them?

Learn  רא”ש יוסף דף מג. & פרי מגדים ס’ רס”ה משבצות זהב ס”ק א

https://hebrewbooks.org/pdfpager.aspx?req=41248&st=&pgnum=169&hilite=

Continue learning the Gemara until תא שמע (third wide line)

How is the reason of ר’ יצחק different than רבה?

Rabbi Baruch Bodenheim: Gemara Shabbos: Perek Kirah: Muktza יום חמישי, Shevat 18 (02/05/26)

Review the גמרא דף מב עמוד ב until .דף מג “איתיביה אביי  (eighth line from top of the Amud) 

The Gemara opens with a Halacha that רב חסדא taught. 

What is the explanation of רבה of the Halacha of רב חסדא ?

Learn Rashi 

Review תוס’ ” שאינה  (only focus  on the last line of the new explanation of Tosfos) who gives a different explanation than Rashi. 

Questions:

What is this new reason of Tosfos?

What is the נפקא מינה between the explanation of Rashi and Tosfos?

Learn תוס’ דף מב: “שאינה

How does Rashi differ on what Tosfos says?

What is the explanation of רב יוסף of the Halacha of רב חסדא ?

Learn תוס’ דף מג. “דמבטל”

Is this the same reason as Rashi?

Continue learning the Gemara until תא שמע (third wide line)

How is the reason of ר’ יצחק different than רבה 

Rabbi Baruch Bodenheim: Gemara Shabbos: Borer – Wednesday night shiur, Shevat 18 – Washing and cleaning fruit and vegetables (02/04/26)

Learn משנה דף קמ. “אין שורין 

Is the Girsa שורין or שולין?

See רי”ף, ר”ן

What’s the difference between the two?

See ט”ז ס’ שי”ט ס”ק ה

See מ”א ס”ק ט 

And מחצית השקל 

What’s the chidush of this prohibition?

Is it permitted to wash and rinse off fruits and vegetables on Shabbos?

Is washing off the dirt a Mdoraissa violation of Borer or Mdrabanan?

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

And משנה ברורה 

Learn the גמרא ביצה דף יד 

See ביאור הלכה “הוי ליה כבורר

Based on the above how would someone be able to rinse fruit or vegetables on Shabbos?

Learn אגרות משה אורח חיים ס חלק א ס’ קכ”ה

Rabbi Baruch Bodenheim: Gemara Shabbos: Perek Kirah: Muktza יום רביעי, Shevat 17 (02/04/26)

Quickly review the משנה דף מב עמוד ב 

Review the גמרא דף מב עמוד ב until .דף מג “איתיביה אביי  (eighth line from top of the Amud) 

The Gemara opens with a Halacha that רב חסדא taught. 

What is the explanation of רבה of the Halacha of רב חסדא ?

Learn Rashi 

Learn תוס’ “הצלה who gives a different explanation than Rashi. 

Learn תוס’ “שאינה

What is the נפקא מינה between the explanation of Rashi and Tosfos?

What is the explanation of רב יוסף of the Halacha of רב חסדא ?

Rabbi Baruch Bodenheim: Gemara Shabbos: Perek Kirah, יום שלישי, Shevat 16 – Starting New Sugya: Muktza (02/03/26)

Learn משנה דף מב עמוד ב 

Learn the גמרא דף מב עמוד ב until .דף מג “איתיביה אביי  (eighth line from top of the Amud) 

The Gemara opens with a Halacha that רב חסדא taught. 

What is the explanation of רבה of the Halacha of רב חסדא ?

Learn Rashi 

Learn תוס’ “הצלה who gives a different explanation than Rashi. 

Learn תוס’ “שאינה

What is the נפקא מינה between the explanation of Rashi and Tosfos?

What is the explanation of רב יוסף of the Halacha of רב חסדא ?

Rabbi Baruch Bodenheim: Gemara Shabbos: Perek Kirah, יום חמישי, Shevat 11 – Review Questions (01/29/26)

Dr Cohen and Alan Gutman again sent a write-up from yesterday’s questions.

Please review them and comment – We will discuss it today

What are the permissible methods to reheat a cold potato kugel on Shabbos morning?1. Near the fire even if the fire is open2. On top of a crock pot or inverted pan that is on the fire.3. Not sure if we can place directly on a blech, i think there is a distinction between Sefardim and Ashkenazim but don’t remember.

May one place a pickle on top of a piece of hot yerushalmi kugel?The question is whether a pickle is considered cooked. For Kashrus pickling is considered cooking from the torah but for shabbos we think it is only cooking drabannan. If it is cooking drabannan, then you can not place on top.

May one place a piece of hot potato kugel on his plate on the area that has salad dressing?no, the kugel is a dvar gush and is considered a kli rishon. A cooked liquid that has cooled cannot be reheated via a kli rishon. We think most salad dressing are not cooked.

Is hot water from a Kli Rishon placed into a thermos considered a Kli Sheini or Kli Rishon?

May one reheat a frozen challah?

May one place a raw apple into a pot of hot water Kli Rishon?

Can one bake an egg in the sun?

What is considered warm in regards to reheating liquids?

Rabbi Baruch Bodenheim: Gemara Shabbos: Borer – Wednesday night shiur, Shevat 11 – Filtering Water (01/28/26)

Filtering water

How is it permitted to filter water on Shabbos?

How do we conclude lhalacha?

Learn טור ושו”ע ס’ שי”ט סע’ י

Note the two opinions brought in Shulchan Aruch?

How do we conclude?

If someone is sensitive and will only drink filtered water is he permitted to drink water that most people drink without it being filtered?

Learn ביאור הלכה 

Rabbi Baruch Bodenheim: Gemara Shabbos: Perek Kirah, יום רביעי, Shevat 10 – Review Questions (01/28/26)

Please write the answers and email them to me

Dr Cohen and Alan Gutman again sent a write-up from yesterday’s questions.

Please review them and comment – We will discuss it today

If someone forgot to add salt to the soup when it was cooked. 

How can one add salt?The Gemara has two opinions about salt. Our salt is typically made from something that is considered either cooked or baked. In salt’s case we saw according to the Chazon Ish that neither cooking or baking salt changes the taste and therefore removes the question of cooking after baking etc. It would appear from him that a kli rishon would be ok. If salt was made simply evaporation, then it was never cooked and we should be machmir for a kli sheni to most poskim although some argue it needs to be a kli shlishi.

How can one add black pepper into their soup?We consider Spices as kalay bishul. Therefore can only be placed in a kli shlishi. But if soup is taken with a ladle then the soup bowl is a kli shlishi and pepper can be used. 

May someone place croutons in their soup? Challah in soup?Osem croutons are fried so it is bishul and no bishul after bishul.  If croutons were only baked then they are considered like bread and should be only used in a kli shlishi?

May one place Cholent on their plate which the liquid of the Cholent will spread into the salad on the plate?The way many people serve cholent is that they take the ladle into a crockpot and then place into a serving bowl and then from there a ladle on to the plate. So if we consider the ladle as a separate kli, then the plate is a chamisi and if the ladle is not counted then the plate is a shlishi. However, a dvar gush can be considered a kli rishon. The question is what is the liquid considered. In shiur we did not discuss the liquid. We will opine that the liquid does not take on the kli rishon designation, and then the liquid coming in contact with the salad should be permitted.

May one reheat a piece of chicken in a tin pan by placing it on top of a pot that’s on the fire which the sauce on top will melt? The way this question is phrased, it sounds like the sauce congealed. We will assume that the sauce was made independently of the chicken as a cooked liquid. However, since it has congealed, we will treat it as a solid, like butter. Therefore, when it melts, you are melting a solid and should be permitted. 

How can one heat up a baby bottle on Shabbos?There are two types of baby bottles. either mothers milk or formula with uncooked water. If from mothers milk we will assume that it is kalay bishul and therefore it requires a kli shlishi. Regarding formula, water is not a kalay bishul and from AI, we see that formula is made as follows:

see image.png below 

If this is how it is made according to Rav Moshe and his non chumra opinion one can make formula directly into kli rishon hot water

May one heat up a solid baked meat roll some of the fat will liquify from the heat? 
Yes, the fat is solid and melting, doesn’t it change its nature. We did see opinions that disagree but we think that the majority view is that it is okay. 

May one place challah on top of a crockpot or upside down pan on hotplate challah to become hard like toast? If we consider roasting and baking as the same (dry heat) then there is no problem even if we know that toasting changes the flavor. There are opinions that roasting and baking are different (at least I remember that) and then if the taste changes this may prohibit this. We do not poskin this way we believe.

What are the permissible methods to reheat a cold potato kugel on Shabbos morning?

May one place a pickle on top of a piece of hot yerushalmi kugel?

May one place a piece of hot potato kugel on his plate on the area that has salad dressing?

097d01e5-c086-4e37-85ee-6a8936c60a2a.png

Rabbi Baruch Bodenheim:Gemara Shabbos: Perek Kirah, יום שלישי, Shevat 9 – Review Questions (01/27/26)

Based on what we learned – 

I would like you to break down the following questions into the core issues that one faces in the following questions and all the variables. Please come to a conclusion on how one would be permitted to get the desired result.

Please write the answers and email them to me

Question:

May one place a lemon in their hot tea?

May one place honey in their hot tea? 

Making a cup of

Hot cocoa – plain 

Instant noodle soup A) Noodles B) Vegetables C) The Spices

May one use a cup that has some water droplets in it to pour water from an urn inside of it to be a Kli Sheini? 

May one place butter on a hot potato ?

May one dip hot french fries into ketchup?

Someone forgot to add salt to the soup when it was cooked it. 

How can one add salt?

How can one add black pepper into their soup?

May someone place croutons in their soup? Challah in soup?

May one place Cholent on their plate which the liquid of the Cholent will spread into the salad on the plate?

May one reheat a piece of chicken in a tin pan by placing it on top of a pot that’s on the fire which the sauce on top will melt? 

How can one heat up a baby bottle on Shabbos?

May one heat up a solid baked meat roll some of the fat will liquify from the heat? 

May one place challah on top of a crockpot or upside down pan on hotplate challah to become hard like toast? 

Rabbi Baruch Bodenheim: Gemara Shabbos: Borer – Monday night shiur, Shevat 9 – Filtering Water (01/26/26)

Filtering water

Very quickly review גמרא דף קלט עמ’ ב “אמר זעירי נותן אדם until the two dots 

What is the answer of the Gemara of בין הגתות?

Major Question:

Why does it matter that people drink the wine with the sediments? Why should that permit one to filter out the sediments if he personally does not want the sediments in his wine? How is this different from a person who has a mixture of two food items and one of them he does not want to eat now – which is forbidden for him to separate as the one he does not want is considered – bad-‘ pesoles -waste? 

How does Rashi answer these questions?

Learn רי”ף

Learn ר”ן

Learn רשב”א who breaks the halacha down to three levels. 

How does the Ran answer these questions?

What’s the difference between Rashi and the Ran/Rashba?

Learn רמב”ם ה’ שבת פרק ח הלכה יד

How does the Rambam rule?

Learn כסף משנה

How is it permitted to filter water on Shabbos?

How do we conclude lhalacha?

Learn טור ושו”ע ס’ שי”ט סע’ י