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prepared by Rabbi Eliezer Chrysler
Kollel Iyun Hadaf, Jerusalem

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Shabbos 90


(a) What is the Shiur for carrying out soaked dyes on Shabbos?

(b) Why does the Shiur for carrying out the raw materials for dye-making not tally with the Shiur for carrying out soaked dyes?

(a) After how long is urine no longer fit to be used for washing clothes?

(b) Neser is a type of Alexandrian earth called 'nitrum'. Why can Boris not be ...

  1. ... sand?
  2. ... sulfur?
(c) What *is* Boris?

(d) How do we then account for the Beraisa, which lists both Boris and Ohala?

3) Ashlag is also known as 'Shluf Dutz'.
How does one obtain it?


(a) What is the Shiur for carrying out ...
  1. ... pepper-corns, tar, spices and metal on Shabbos?
  2. ... stones of the Mizbei'ach and dust from Sifrei-Torah and their mantles?
(b) Why is one Chayav in the latter cases?

(c) What does Rebbi Yehudah learn from the Pasuk in Devarim "ve'Lo Yidbak be'Yadcha Me'umah min ha'Cherem"?

(d) What is the use of ...

  1. ... *one* pepper-corn?
  2. ... a small amount of tar?
(a) Someone who carries out a small amount of 'Rei'ach Ra, Argaman and Besulas ha'Vered is Chayav.
What are these, and what use do they have?

(b) What would a small piece of metal be used for (in those days)?

(c) Someone who made a vow to donate metal to Bedek ha'Bayis, had to give a square Amah.
What would Bedek ha'Bayis do with it?

(d) How much copper would he have to give - according to the Tana Kama - if he made a similar vow to donate copper?

(e) Rebbi Eliezer gives the Shiur as enough to make a fork.
What was the fork used for?

(a) What are the following, and what do they have in common: 1. Sefarim-dust; 2. the Techach of silks; 3. the Ila of grapes; 4. the Peh of figs; 5. the Heh of pomegranates?

(b) What did Rebbi Yochanan say, when one of his Talmidim complained of thorns in the figs that he was eating?

Answers to questions



(a) What is a Kupas ha'Ruchlin? How many Chata'os will one be Chayav for carrying out a Kupas ha'Ruchlin which contains five kinds of spices?

(b) What is the Shiur for carrying out cucumber, pumpkin or Egyptian-bean seeds? Why is one Chayav for such a small Shiur, when the Shiur for other seeds is a little less than a Kigerogeres?

(c) What is the Shiur for carrying out seeds - according to Rebbi Yehudah ben Beseira?

(d) What is the Shiur for carrying out ...

  1. ... a live, Kasher locust?
  2. ... a dead Kasher locust?
  3. ... a live or dead Tzipores Keramim?
(e) Why is the Shiur of a live locust different than a dead one?
(a) What is the Shiur for carrying out date-pits for ...
1. ... planting?
2. ... animal food?
3. ... fuel?
4. ... as counters - according to the Tana Kama?
(b) Rebbi Meir? What is Rebbi reason?

(c) What is the Shiur for carrying out ...

1. ... hair from the tail of a horse or a cow?
2. ... hard fibres from the spine of a pig?
3. ... thick fiber from a date-palm?
4. ... thin fiber from a date-palm?
(d) What are all of these used for?
(a) The Tzipores Keramim is a very small bird.
Where is it found?

(b) What is it used for?

(c) What does he do with the left half of the bird?

(d) What is the significance of the Si'man (from the Pasuk in Koheles) "Lev Chacham li'Yemino, ve'*Lev Kesil li'Semolo*"?

(a) According to Rebbi Yehudah, someone who carries out a live, non-Kasher locust, is Chayav.
Why do the Rabbanan say that he is Patur?

(b) What does Rebbi Yehudah say about that?

(c) The Gemara initially gave the reason of the Tana Kama as being that he might come to eat it whilst it is still alive.
On what grounds does the Gemara refute that contention?

(d) Our Mishnah maintains that one does not keep a forbidden creature for a child to play with.
Does this clash with the opinion which holds that one is not obligated to separate a child from a child who is eating Neveilah?

Hadran Alach 'Amar Rebbi Akiva'!

Perek ha'Matzni'a
(a) We have already learned that someone who stores away less than a Shiur of any commodity, will be Chayav if *he* subsequently carries it out. If he then changes his mind, and decides to revert to its original use, will he be Chayav for carrying it back inside?

(b) Why does the Tana need to tell us the case of someone who first stored away the commodity and then carried it out - when he could have simply stated a case where he simply carried out a minute amount specifically for sowing, as a sample or for a cure - even without having stored it first?

Answers to questions
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