REVIEW QUESTIONS ON GEMARA AND RASHI
prepared by Rabbi Eliezer Chrysler
Kollel Iyun Hadaf, Jerusalem
Previous daf Moed Katan 4
(a) Rebbi Yochanan disagrees with the previous explanation (of Rebbi
Yitzchak and Rav Nachman bar Yitzchak). He maintains that Raban Gamliel and
his Beis Din rescinded the Takanah of Beis Hillel and Beis Shamai min
What did he learn from a 'Gezeirah-Shavah' "Shabbos" "Shabbos"
from Shabbos Bereishis?
(b) Why is his explanation unacceptable?
(c) Rav Ashi amends Rebbi Yochanan's explanation. He explains that in fact,
Raban Gamliel and his Beis-Din hold like Rebbi Yishmael (in the Derashah of
"be'Charish u've'Katzir Tishbos".
How does that answer the Kashya? How
does Raban Gamliel now have the right to cancel Tosefes Sh'mitah?
(a) The Tana of our Mishnah forbids using Mei Kilon (water in a pit) to
water a Beis ha'Shalachin because of the trouble involved. According to
Rebbi Yochanan, he decrees rain-water (that is flowing and does not involve
excessive trouble) in case one will then go on to use Mei Kilon.
rain-water forbidden, according to Rav Ashi?
(b) Rebbi Zeira quotes ... Shmuel who says that one is permitted to water
one's field on Chol ha'Mo'ed from rivers that draw their water from pools.
What is Shmuel's Chidush? Why might we have thought that this should be
(c) With which opinion does Shmuel's opinion conform, with that of Rebbi
Yochanan or with that of Rav Ashi?
(d) Rebbi Yirmiyah asked Rebbi Zeira (who permitted watering one's field in
Bavel from pools of water), why the pools of Bavel should be any different
than Mei Kilon, which might dry up and are therefore forbidden.
(a) The Tana of the Beraisa permits using the water from pools on Chol
ha'Mo'ed, provided a stream flows between them.
Why is that?
(b) Rav Papa adds the requirement that one must be able to water most of the
field from that stream at the same time (for obvious reasons).
grounds does Rav Ashi maintain that this is nevertheless not necessary?
(c) Under which condition may one water a field from a pool of water (even
when there is no stream flowing from it)? Why are we not worried that it may
(d) Which second condition does Abaye add?
(a) Rebbi Shimon ben Menasya forbids carrying water from a lower field to a
higher one. Why?
(b) Rebbi Elazar b'Rebbi Shimon is even more stringent.
What does he say?
(a) When may one water vegetables, and when may one not?
Answers to questions
(b) On what grounds did Rabah Tosfa'ah ask Ravina to place a certain man in
Cherem one Chol ha'Mo'ed? What was the man doing that displeased him?
(c) Ravina proved to him from a Beraisa that it is permitted to water
vegetables as long as one intends to eat them on Chol ha'Mo'ed (i.e. that
that is what 'Madlin li'Yerakos ... ' means).
How did Rabah Tosfa'ah
interpret 'Madlin li'Yerakos ... '?
(c) Did Rabah Tosfa'ah accept Ravina's proof?
(a) Rav Yehudah translates Ugi'os for the vines (forbidden by our Mishnah on
Chol ha'Mo'ed) as 'Banchi'.
What are 'Banchi'?
(b) How do we reconcile this with Rav Yehudah himself, who permitted the
people of Tzisa'i to dig 'Banchi' for their vineyards on Chol-ha'Mo'ed?
(a) Rebbi Zeira and Rebbi Aba bar Mamal argue over Rebbi Elazar ben
Azaryah's reason for forbidding digging the course of a stream in the
Sh'mitah year. One of them says because it resembles digging in one's field.
What does the other one say?
(b) We suggest that the difference between them will be a case where the
water flows along the bed as he digs, since that hardly resembles normal
On what grounds do we reject this suggestion?
(c) So we give the difference as being a case where the digger throws the
earth beyond the stream's banks, in which case, it no longer looks as if he
is preparing the stream's banks for sowing.
Why does this opinion
nevertheless not forbid it because it resembles digging?
(a) The Tana Kama in a Mishnah in Shevi'is says 'Oseh Adam es Zivlo Otzer'.
What does he mean?
(b) Rebbi Meir forbids it unless he places it in a ditch three Tefachim deep
or on a mound three Tefachim high.
When does Rebbi Meir concede that it is
permitted even when there is no ditch or mound?
(c) Rebbi Elazar ben Azaryah is the most stringent of all.
What does *he*
(a) Ameimar gave Rebbi Elazar ben Azaryah's reason for forbidding the
digging of a source of a stream because it resembles digging in a field.
How does that now create a discrepancy in Rebbi Elazar ben Azaryah's own
(b) Rebbi Zeira and Rebbi Aba bar Mamal give two reasons as to why the
latter case (the Mishnah in Shevi'is) is different. One says because it
speaks when he had already dug the ditch (or the mound) beforehand.
does the other one say?
(a) Rebbi Aba explains 'u'Mesaknin es ha'Mekulkeles' (in our Mishnah) to
mean that if one Tefach of a stream that was one Amah deep became stopped
up - one is permitted to re-dig the one Tefach.
Answers to questions
Why is it obvious that
this will be forbidden if the stream had an original depth of ...
(b) Rebbi Aba's She'eilah is in the case of a stream that was originally
seven Tefachim deep, five of which became stopped up?
- ... *three* Tefachim, and *half* a Tefach became stopped up?
- ... *twelve* Tefachim, of which *two* Tefachim became stopped up?
Why should it be ...
(c) Abaye permitted the removal of branches from the river bed on Chol
ha'Mo'ed; Rebbi Yirmiyah permitted clearing the source of a river that
became stopped-up, and Rav Ashi permitted clearing away a large pile of
rubble that had formed in the middle of a river.
- ... permitted?
- ... forbidden?
What is the reason for
all these concessions?