REVIEW QUESTIONS ON GEMARA AND RASHI
Prepared by Rabbi Eliezer Chrysler
of Kollel Iyun Hadaf, Yerushalayim
daf@dafyomi.co.il http://www.dafyomi.co.il
1)
(a) May one weigh with weights on Yom-Tov?
(b) In that case, how does Rebbi Yehudah permit using scales on Yom-Tov?
(c) The Chachamim say 'Ein Mishtamshin b'Chaf Moznayim Kol Ikar'. Why do they add the words 'Kol Ikar'?
(d) Under which circumstances would this be permitted?
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2)
(a) What does Rav Yehudah Amar Shmuel say about ...
1. ... weighing a piece of meat against a weight that one is holding in the other hand?
2. ... weighing in water? How does one weigh in water?
(b) Rav Chiya bar Ashi forbids making a handle in a piece of meat. How does Ravina modify this Halachah? What is the reason for that?
(c) May one make a Siman on a piece of meat? What was the Siman for?
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3)
(a) Rebbi Chiya and Rebbi Shimon b'Rebbi would divide meat between them by weighing a Manah against a Manah. What is the problem with that from our Mishnah?
(b) How do we resolve this problem?
(c) On what basis does Rav Yosef rule like Rebbi Yehoshua?
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4)
(a) On what grounds is one permitted to ...
1. ... weigh a Manah against a Manah when selling a Bechor, even though it is forbidden to use weights?
2. ... sell other Kodshim even using scales to weigh them, and even in a shop (both of which are forbidden by a Bechor)? Why the difference?
(b) Abaye disagrees with the connection between Yom-Tov and Kodshim. Why, in his opinion, might the Heter of weighing a Manah against a Manah ...
1. ... on Yom-Tov, according to Rebbi Yehoshua, not apply to Kodshim?
2. ... by Bechor, according to the Chachamim, not apply to the case of Rebbi Chiya and Rebbi Shimon b'Rebbi on Yom-Tov?
(c) What is strange about the fact that Rebbi Chiya and Rebbi Shimon b'Rebbi found it necessary to weigh the meat when dividing it?
(d) How does Rav Papa resolve this problem?
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5)
(a) One may not use a grindstone to sharpen a knife on Yom-Tov. Our Mishnah permits rubbing one knife against another (because it constitutes a Shinuy). What other alternative does Rav Huna offer?
(b) According to the first Lashon, Rav Yehudah Amar Shmuel (referring to the Reisha of Rav Huna) permits even sharpening the knife using a wooden grinder. Is there any Heter at all, according to him, to use a grindstone?
(c) According to the second Lashon, a grindstone is completely forbidden. In which case then, does Rav Huna permit a wooden grinder?
(d) According to the third Lashon, Rav Yehudah Amar Shmuel refers to the Reisha of our Mishnah, permitting even a grindstone to be used to remove the fat that is stuck to the knife. In that case, the Heter in the Seifa of rubbing one knife against another, even extends to sharpening it. In the fourth Lashon, his statement refers to the Seifa of the Mishnah. What does he then say?
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6)
(a) Our Mishnah forbids using a grindstone to sharpen a knife. Which Tana cannot be the author of our Mishnah?
(b) What was Rav Chisda's reaction when Rava asked him whether they should Darshen in his name that the Halachah is like Rebbi Yehudah?
(c) Rava told Rav Nechemyah Brei d'Rav Yosef that he was rubbing a knife against the rim of a basket in order to clean off the fat. Why was he really doing it? Why did he not say so?
(d) Why did Rava (and Rabah) not want to rule like Rebbi Yehudah publicly?
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28b----------------------------------------28b
7)
(a) There is a Machlokes Amora'im as to whether one may show one's Chalif (Shechitah knife) before Shechting (even though it is obligatory to do so). Why might Chazal have forbidden it?
(b) What can one do to get round this prohibition?
(c) Seeing as it is forbidden to sharpen a knife whose blade is completely spoilt on Yom-Tov, why is it permitted to sharpen it if it only became blunt?
(d) Is there any difference between a knife which became partially blunt and one which became completely blunt?
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8)
(a) Which Tana permits sharpening a knife or a spit-rod, and clearing an oven of its ashes on Yom-Tov?
(b) What do the Rabanan learn from the word ...
1. ... "*Hu* (Levado Ye'aseh Lachem)" (in Bo)?
2. ... "Lachem"?
(c) What does Rebbi Yehudah learn from ...
1. ... "Hu"?
2. ... "Lachem"?
(d) Why is it forbidden to straighten a spit-rod that became bent? But is that not obvious?
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9)
(a) Why is a spit-rod Muktzeh on Yom-Tov, after one has roasted one's meat on it?
(b) According to Rav Ada bar Ahavah Amar Rav Malkiyo, what may one do with it?
(c) According to Rav Huna, that is only if there is a k'Zayis of meat on it. What does Ravina say? Why is that?
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10)
(a) According to Rav Chinena Brei d'Rav Ika, the author of 'Shefod' (our case), 'Shefachos' and 'Gumos' is Rav Malkiyo; of 'Beluris', 'Eifer Makleh' and 'Gevinah', Rav Malkiya. What does Rav Papa say? What is the meaning of the Siman 'Masnita Malkesa'?
(b) Over which case are they arguing?
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11)
(a) How does a butcher (Shochet) Shecht an animal for to divide a number of people? What should one take care not to do?
(b) In Sura, they would say to the butcher 'Give me a Tarta or half a Tarta; in Neresh, ' ... a Chalka or half a Chalka, and in Nahar Pakud and in Masa Machsaya, ' ... a Riv'a or half a Riv'a'. What does this mean?
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