Siman - Eruvin Daf 40

  • בכדי שיעשה

The Gemara discusses the issue of a Jew benefiting from work done by a nochri, and brings the following incident. הנהו בני גננא דגזו להו אסא ביום טוב שני – There were these canopy makers, for whom hadassim were cut down by nochrim on the second day of Yom Tov, and that evening Ravina allowed them to smell the hadassim immediately upon the conclusion of Yom Tov. Rava bar Tachlifa said to Ravina that he should forbid them to smell the branches because they are not bnei Torah, and they will come to treat the second day of Yom Tov lightly.

Rav Shemayah objected to this statement which implies that if they were indeed bnei Torah they would be permitted to smell them, והא בעינן בכדי שיעשו – but one is required to wait after Yom Tov the amount of time that it takes for the work to be done, before being permitted to benefit from work that was done on Yom Tov. Rava was asked what his opinion was, and he ruled, בעינן בכדי שיעשו.

  • Mentioning Rosh Chodesh on Rosh Hashanah

Rabbah said that when he was in the Yeshiva of Rav Huna, they asked Rav Huna what the halachah was regarding mentioning Rosh Chodesh in the tefillos of Rosh Hashana. Do we say that כיון דחלוקין במוספין אמרינן – Since one brings different Mussaf offerings on Rosh Hashana and on Rosh Chodesh, Rosh Chodesh should be mentioned, או דילמא זכרון אחד עולה לכאן ולכאן – or perhaps, one mention of “remembrance” is sufficient for both of them. Rashi explains that Rosh Hashanah is called, זכרון תרועה – a day of remembrance of the Teruah, and the Torah says regarding Rosh Chodesh, והיו לכם לזכרון – and it will be for you a remembrance. Since Hashem promises to remember us on both days, the term יום הזכרון  in the Rosh Hashana tefillos can refer to both.

After extensive discussion, the Gemara concludes that both Rav Chisda and Rabbah individually said, זכרון אחד עולה לו לכאן ולכאן – One mention of “remembrance” is enough for both occasions .

  • Making a shehechiyanu on Rosh Hashanah and Yom Kippur

Rabbah also asked Rav Huna whether a Shehechiyanu should be recited on Rosh Hashanah and Yom Kippur. Do we say that כיון דמזמן לזמן אתי אמרינן – Since they only come from time to time, we should recite them, או דילמא כיון דלא איקרי רגלים לא אמרינן – or perhaps since they are not called regalim, we do not recite them, because only the regalim have an elevated sense of simcha. Rav Huna did not know the answer. Rabbah then went to Rav Yehudah and said to him that he understood that one has reshus to make the beracha on Rosh Hashanah and Yom Kippur, but he does not know if it is a chovah to recite it. Rav Yehudah answered that Rav and Shmuel hold that it is only a chovah to recite a shehechiyanu on the three regalim. After extensive discussion the Gemara rules, הלכתא אומר זמן – The halachah is that one needs to recite a shehechiyanu on Rosh Hashanah and Yom Kippur.