by Rabbi Eliyahu Safran
And the children of Israel shall be as the sand of the sea, which will be neither measured nor counted.
          Hosea 2:1
The Talmud (Yoma 22b) teaches us that Jews may only be counted in the fulfillment of a mitzvah.  Therefore, King David was harshly punished for ordering a census, “so that I may know the number of the people” (Shmuel II 24:2) but not when doing so for waging a required war.  (Shmuel II 18:1)   

By Rabbi Berach Steinfeld
The Rema in Ohr Hachaim, siman taf kuf nun gimmel brings down in the name of the Maharil that we have a minhag not to learn regular limudim from Erev Tisha B’Av after chatzos until the end of Tisha B’Av. There are special limudim that are relating to sad things that may be learned on Tisha B’Av. The Rema concludes that if Tisha B’Av falls out on Shabbos, we don’t learn Pirkei Avos.

Chazak

 By Rabbi Berach Steinfeld

When one finishes a sefer of the Chamisha Chumshei Torah there is a minhag that
the tzibbur says “Chazak Chazak Venischazeik.”

By Rabbi Berach Steinfeld
The posuk in Bamidbar, Perek Chof Ches, posuk yud alef says that a special korban was brought every Rosh Chodesh.

By Rabbi Moshe Meir Weiss
 

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