38 Things to Know When Erev Pesach Falls on Shabbos

 By Rabbi Yair Hoffman

Observing Fast Days When Erev Pesach Falls on Shabbos

1. Regarding when to fast: The authorities are divided on when firstborn sons need to fast when Erev Pesach falls on Shabbos. The Trumas HaDeshen (Vol. I #126) writes that they move the fast to Thursday (the 13th of Nisan) which is how the Ramah rules. The Maharil writes that since the fast has been postponed, it is completely canceled and there is no need to fast at all. The Birchei Yoseph (470:4) is from those who write that the fast is held on Friday.  A father who is fasting for his firstborn son who is not yet bar-mitzvahed, however, does not have to fast at all when this happens (See SA 470:2 and Kaf HaChaim #23)  
2. It is customary for the firstborn to participate in a siyum (completion of a tractate of Talmud or an order of the Mishna) on Erev Pesach to exempt oneself from fasting, the prevalent custom in such a year is to have the siyum on  Thursday.  Rav Sternbuch shlita  in his Teshuvos V’Hanhagos Vol. II #211 cites a custom that some are stringent to attend another Siyum yet on Friday. This, however, is not the prevalent minhag.
3. When Pesach falls on Motzei Shabbos – the specialized “Matzos Mitzvah” are baked on Friday.
4. The authorities are divided on when is the time for selling chametz in this year. The prevalent custom is to sell the chametz on Friday before the end of the fifth hour, in order not to alter the custom from other years.
5. Similarly, in this year the document of sale of chametz is also written just like in other years, without specific conditions indicating from when the sale will take effect. However, there are those who write (Rav Shmuel Vosner zt”l) that one should add in the document of sale that those who are selling are selling all the chametz besides the chametz designated for Shabbos meals.
6. Many forbid to sell chametz in stores after the time for selling chametz on Friday However, we do not object to those who do it, because they have whom to rely upon (See MB 468 and Biur Halacha “MiChatzos.”)
7. The time for burning and removing chametz is on Erev Shabbos before the sixth hour, so that it will not come to be done like in other years after the burning of chametz.
8. However, the time for nullifying the chametz is on Shabbos day itself.
9. Work that is forbidden on Erev Pesach is permitted on the sixth day that precedes Erev Pesach, because the prohibition of work was only stated at the time of offering the Passover sacrifice.
10. Every year on Erev Pesach, the time for koshering vessels that have absorbed chametz and dough for use on Pesach ideally is until the end of the time for burning chametz. However, in a year when Erev Pesach falls on Shabbos, it is permitted initially to kosher vessels on anytime Friday until the entrance of Shabbos (See Shaivet HaLevi Vol. XI #116).

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