New Sefer Explores Alter Rebbe’s Views on Trustworthiness

A new sefer by Rabbi Shmuel Zajac, brings clarity to the complex Halachic topic of ne’emanus be’isurin—the reliability of certain forms of evidence in Halachic matters.

A new sefer published by Rabbi Shmuel Zajac, a Magid Shiur at the Yeshivah in Morristown, explains the complex topic of ne’emanus be’isurin—the reliability of different forms of evidence regarding the status of ritually forbidden matters. 

The new sefer is the second installment in the series titled “Yesodei Hashulchan Vezikukei Orosov,” following the acclaimed first sefer regarding amira lenochri. In this series, the author, who is well known for his in-depth shiurim and articles, illuminates the Alter Rebbe’s famously deep and concise words in two ways. First, by explaining the foundations upon which the Alter Rebbe based his rulings in the Shulchan Aruch, “Yesodei Hashulchan,” and secondly, by uncovering the novel insights that can be gleaned from them “Zikukei Orosov.”

The new sefer covers a few simanim from hilchos shechitah in the Alter Rebbe’s Shulchan Aruch and expounds upon the many foundational concepts expressed in these halachos, such as rov, various chazakos, the reliability of a single witness, and more.

Available now in Seforim stores, the new sefer is decorated with approbations from leading Rabbis and Halachic authorities in the US and Israel. Rabbi Asher Weiss, a renowned posek in Yerushalayim writes, “The greatness and extraordinary depth of the Shulchan Aruch Harav is well known. . . . few scholars are successful at grasping this depth fully. I was therefore very pleased and impressed with how the author explains these complicated topics so thoroughly and logically.” In an especially enthusiastic approbation, Rabbi Meir Heisler, Rosh Yeshivah of Yeshivas Emek HaTalmud in Yerushalayim, praises the Sefer as “an incredible innovation in our generation,” and adds his own scholarly comments.

The Sefer is especially suitable for Yeshivah students, Kollel Yungerleit, and Rabbonim who wish to learn the halachos of ne’emanus beisurim from the Alter Rebbe’s Shulchan Aruch in depth.

The Sefer is available in Seforim stores and directly from the author at [email protected]


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  1. Mazal Tov to my dear role model on the new sefer.

    People ought to know that one can do this on any part of the Alter Rebbe’s Shulchan Aruch. There are numerous chiddushim in each seif. When learned with the mekoros one realizes the hagdoros and that the novel approach to the sugia answers many questions of achronim. One doesn’t need advanced skills to do this. Just learn the sugia from Gemora with Rosh and Ran and then Tur Beis Yosef and Shulchan Aruch with Nosie Keilim and then The AR SA, you will immediately see new depth in the words of the AR.

    For example he often learns different peshat in the Magen Avraham then the Machtzis Hashekel or the Livushei Srad or argues with the Pri Megadim. At first you will have questions why the AR adds or doesn’t explain it simply, but then you will see that he has a unique shita which resolves many other issues. Taamu Ureu Ki Tov. One just needs time and yishuv hadaas to sit for a couple of hours and then one gets a taste of Gan Eden in this world.

    1. Bh

      I believe that Rabbi Zajac has a unique clarity, and goes farther than just how the AR is different than the magen avraham, especially regarding these topics which many of these inyonim ne’emonus, chazokois etc. are learned in yeshiva, and the AR is not even mentioned.

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