

The Pischei Teshuvah cites the Toldos Adam, who takes a different approach and makes an example out of this story as proof that even Gedolim can err. The issue with this is that, by Rav Yonason’s own testimony, the porger was a “ Talmid Chacham and expert”, which would negate this solution. One suggestion was that the porger was unlearned, and Rav Yonason wanted to expose his ignorance and therefore set a trap and easily refute him. They wondered, is it possible the great Rav Eibeshutz could have made such a simple mistake? And, if so, what was it that the Kreisi U’Pleisi showed this traveling treibberer that refuted his taynos? Many scholars over the years searched for a proper solution to this perplexing conundrum. However, as many puzzled people later pointed out, this logic seemed inherently flawed, as this quote does not actually appear in the SMaG! The SMaG in his actual quote ( Mitzvos Lo Sa’aseh 139) was referring to people, not animals! In other words, he wrote that women were similarly obligated in keeping this prohibition as men do. He concludes his passage reiterating the importance and necessity of a porger’s proficiency and capability. With his vast knowledge and expertise, Rav Eibeshutz thus averted potential communal disaster. Rav Yonason writes that he showed this fellow the error of his ways as the sinew this porger was referring to was found exclusively in male animals, and could therefore not possibly be the correct one, for it states in the “ SMaG(ostensibly the Sefer Mitzvos Hagadol, written by Rav Moshe of Coucy in the 13th century, Negative Commandment 139) that the prohibition of Gid Hanasheh applies to both males and females”. The ramifications of his claim were gargantuan, for if it were deemed accurate, consequently all of World Jewry would have chas veshalom been eating non-kosher from time immemorial! He related that an expert porger came to town (Prague) claiming that the sinew that Jews have been removing for centuries was the wrong one! This treibberer alleged that a different sinew was the true Gid Hanasheh. In the latter sefer, in his commentary to the laws of Gid Hanasheh, Rav Yonason recorded a fascinating historical incident, which posthumously sparked a raging halachic controversy. One of the most outstanding experts in hilchos nikkur known was Rav Yonason Eibeshutz zt”l (1690 - 1764), one of the greatest Torah giants of his period and famed author of 89(!) works, including the renowned Yaaros Devash, Urim V’Tumim, and Kreisi U’Pleisi. treibbering, deveining, or porging the forbidden nerves and fats, and it takes an expert to do it properly.

To fulfill this mitzvah properly, every last trace of said nerves and the fat covering the sciatic nerve must be removed as well. The Sefer HaChinuch writes that this mitzvah actually serves as a constant reminder that eventually we will be redeemed from this protracted exile.

Additionally, there is a Rabbinic prohibition on eating from the outer sinew of the animal’s thigh tendon. In Parshas Vayishlach, after Yaakov Avinu’s epic battle with Eisav’s guardian angel, where he got injured in his hip socket, we are given a Biblical commandment, the third and last of the whole sefer Bereishis, that Bnei Yisrael may not partake of the Gid Hanasheh, the sciatic nerve, of any animal.
