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Torah · 40:07

The Amazing Lomdus of Why Sefek Sefeika Applies By Sefiras Ha'omer and Not Other Brachos

484 views · Apr 19, 2026

Rabbi Daniel Glatstein

An in-depth analysis of the halachic principle of sefek sefeika in the context of Sefiras HaOmer.

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The opening of this shiur, in Rabbi Daniel Glatstein’s own words — taken from the captions, so names and Hebrew terms may be approximate.

In Siman Taf Peh Tes, as I'm sure everyone is familiar with, the halacha is that if you forgot and you did not make Sefiras HaOmer at night, then there's a way to rectify it by counting during the day. In the Siman HaMechaber in Siman Taf Peh Tes of Zayin, in the Shulchan Aruch, it's Sif Tes Zayin. Let me tell you what the Mechaber says first and we'll see it in the Shulchan Aruch. Shachach u'varach kol halaila, yisbor bayom b'lo bracha. Case so if you forgot your count, you could count during the day without a bracha. Says the Mishna Berurah, according to many poskim that b'dieved Sefiras Hayom, it works. B'dieved counting during the day works. So let's say last night you didn't say the Sefirah right now, you could say Hayom Shiva asar yom shem shnei shavuos. Shlosha yamim la'omer. Shouldn't say it standing. Yeah, the Sha'ar HaTziyon says that the Bahag in Hilchos Shavuos and the Rambam poskin niktzar bayom kosher. If you cut the the Omer during the day, it's it's okay. And we know counting is totally on the ketziras ha'omer. V'ya du'a d'rachmana talya Sefirah b'ketzirah d'chasiv meihachal chermesh bakama tachel lispor. Although you could push off and like Tosefos says, even if ketzirah vayom kosher, but Sefirah needs temimus. Fine. But there is a a valid opinion that um Sefirah bayom, it works

Jump to a moment

  1. 0:33In Siman Taf Peh Tes, as I'm sure everyone is familiar with, the halacha is that…
  2. 4:18k'dei l'gmarei hagmarei. It's not like you completely skipped. She'ein osei for o b'vracha, you can't…
  3. 7:54a bracha? Yes. Not only can you, you're obligated to. Because according to many Rishonim, every…
  4. 12:12like says Sefirah for that purp- for that reason. Okay. We'll see. We're going to get…
  5. 15:49I mean, now the now it's going to work against you because you're right, I counted…
  6. 20:16regular beracha. Which berachas are derabbanan. So since berachas are derabbanan, even if you have a…
  7. 23:53and you forgot to count? This is a famous thing. What's the halacha? You're the rabbi,…
  8. 27:37Komarna. That Talmidei Ba'al Shem Tov stama d'azai, if they miss a night, they can continue…
  9. 31:45uh reish taz vav subkatan chaf, we don't make brachos out of safek safeka. Can I…
  10. 35:34Now, 1 second. Says the Mishna Berurah, "What if I ate a kabeiah, but I ate…

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