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prepared by Rabbi Eliezer Chrysler
Kollel Iyun Hadaf, Jerusalem

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Moed Katan 17

MOED KATAN 17 (October 24) - In honor of the birthday of Simcha Klein of Yonkers, NY, from the Leichmans of Teaneck, NJ. Ad Meah V'Esrim!


(a) We learn from a Beraisa that a Niduy imposed by a Talmid defending *his own honor* is valid.
What does the Beraisa actually say in this regard?

(b) How do we know that the Tana is not referring to a case where the *honor of Hashem* is at stake?

(c) What other concession does Rav Yosef concede to a Tzurba me'Rabbanan (a Talmid-Chacham)?

(a) What problem did Rav Yehudah have with placing a Niduy on a certain Talmid-Chacham about whom ugly rumors were being spread? Why did he not simply go ahead and impose it?

(b) He consulted Rabah bar bar Chanah, who quoted the Pasuk in Mal'achi "Ki Sifsei Kohen Yishmeru Da'as, ve'Torah Yevakshu mi'Pihu, Ki Mal'ach Hashem Tzevakos Hu".
What did he learn from that Pasuk?

(c) Rav Yehudah followed Rabah bar bar Chanah's advice.
What happened next?

(d) Why did Rav Yehudah laugh when the errant Talmid-Chacham entered?

(a) Once Rav Yehudah died, there was nobody of his caliber in the Beis Hamedrash to nullify the Niduy for that Talmid-Chacham.
How did Rav Ami become involved?

(b) Rav Ami was about to nullify the Niduy, but stopped short when Rav Shmuel bar Nachmeini cited an incident with the maidservant of Rebbi.
What was his objection?

(c) On what grounds did Rebbi Zeira accept Rav Shmuel bar Nachmeini's objection?

(a) That Talmid-Chacham left the Beis Hamedrash crying.
What happened to him?

(b) He was not accepted for burial in the cave of the Chasidim, but he was accepted in that of the Dayanim. This honor was conferred upon him because he followed the advice of Rebbi Ila'i.
What did Rebbi Ila'i say?

(c) How does Rav Hai Gaon interpret Rebbi Ila'i's statement?

(d) Why did the maidservant of Rebbi place a Niduy on someone? What La'av had he transgressed?

(a) Resh Lakish was guarding his fig-orchard.
Why did he place a Niduy on someone?

(b) Strangely enough, that man placed a Niduy on him in return.

(c) The Chachamim give the latter right. What was Resh Lakish expected to do about it?

(d) What did they tell Resh Lakish to do when he pointed out that he did not know who the man was?

(a) Rav Huna said that in Usha, they initiated a Takanah with regard to placing a Niduy on a Talmid-Chacham.
What did the Takanah constitute ...
  1. ... the first time he sinned?
  2. ... the second time he sinned?
(b) Resh Lakish disagrees with Rav Huna.
What did Resh Lakish learn from the Pasuk in Hoshei'a "ve'Chashalta ha'Yom ve'Chashal Gam Navi Imach *Laylah*"?

(c) What would Mar Zutra the Chasid do when he had to place a Niduy on a Talmid-Chacham?

(d) Why did he first nullify his own Niduy, before nullifying that of the Talmid-Chacham (see Tosfos DH 'Meshamis')?

(a) On what grounds did Rav Gidal 'boast' that he had never placed a Niduy on a Talmid-Chacham? How did he then punish a Talmid-Chacham who had done something which deserved a Niduy?

(b) 'Shamta' is the acronym of one of two things: According to Rav, it is 'Sham Misah'.
What does Shmuel say?

(c) What did Shmuel mean when, after the previous statement, he added that it is as effective as fat with which one smears an oven?

(d) Resh Lakish disagrees.
What does he say about ...

  1. ... a Cherem (which we currently fuse with Niduy), whose numerical value is 248?
  2. ... the Pasuk in Chavakuk "be'Rogez *Racheim* Tizkor"?
Answers to questions



(a) What does Rav Yosef say about placing a Cherem on a dog's tail?

(b) Did such a thing ever happen?

(c) When Rav Yosef instructed that Talmid-Chacham to place a Niduy upon a certain tough guy, he was afraid to do so either verbally or in writing. What did Rav Yosef then advise him to do for forty consecutive days? What happened?

(d) Shofros are blown when a Niduy is imposed. Why ...

  1. ... are those Shofros called 'Shipuri'?
  2. ... did they specifically include the note 'Shevarim' when imposing the Niduy?
(a) Our Mishnah permits various people to shave or to wash their clothes on Chol ha'Mo'ed. Rebbi Yirmiyah asked Rebbi Zeira whether this applies even if they had time to do so before Yom-Tov.
What did he answer (with regard to the majority of cases)?

(b) Why are a Nazir and a Metzora different? Why are they permitted even if they *did* have time to have a haircut before Yom-Tov?

(c) Why is an Aveil whose eighth day fell on Erev Yom-Tov ...

1. ... not permitted to have a haircut on Chol ha'Moed?
2. ... which was also Shabbos, not permitted to have a haircut on Chol ha'Mo'ed either, even according to the Rabbanan of Aba Shaul (even though the Halachah is not like them)? What do the Rabbanan of Aba Shaul say?
(d) Who is then the author ...
  1. ... of the Beraisa which permits an Aveil to shave on Chol ha'Mo'ed? What is the case?
  2. ... of our Mishnah, which prohibits it?
(a) The same Beraisa which permits an Aveil to have a shave and to wash his clothes (under the circumstances that we just described) also permits a Kohen whose Mishmeres just served in the Beis-Hamikdash to do so.
Why can this not be speaking about a case when his group finished serving on Shabbos, Erev Yom-Tov?

(b) Then in which case *does* the Tana of the Beraisa permit it?

(c) And how will we explain the Machlokes between the Beraisa and our Mishnah? What is the reason of the Tana of ...

  1. ... the Beraisa who permits it?
  2. ... the Tana of our Mishnah who forbids it?
(a) The Tana of the Beraisa permits all those who are permitted to shave on Chol ha'Mo'ed, to shave when they are in mourning.
How does Rav Chisda quoting Rav Shilo establish this Beraisa in order to reconcile it with the Beraisa which expressly forbids it?

(b) And how do we then reconcile this Beraisa with another Beraisa, which permits someone who faces a second consecutive term of mourning to 'lighten his hair with a razor and to wash his clothes with water' (even without the circumstances mentioned in our Mishnah)?

(c) Which basic Halachah does Rav Chisda learn from this Beraisa?

(a) Rebbi Yehudah compares cutting one's nails both on Chol ha'Mo'ed and in the case of an Aveil to washing one's clothes.
What does Rebbi Yossi say?

(b) Ula rules strictly by an Aveil, like Rebbi Yehudah, and leniently on Chol ha'Mo'ed, like Rebbi Yossi.
How does Shmuel rule? What is the basis for Shmuel's Machlokes with Ula?

Answers to questions

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