Monthly Archive: November 2025

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

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

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

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

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

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