The Eddie D. Sitt edition of the audio series on the Talmud Bavli has been dedicated to the study of Masechet Zevachim by our esteemed friend and student of the Shiur Daf Yomi, Binyamin HaKohen, affectionately known as Benny C. This dedication is a testament to his commitment to the study of the Masechet, which focuses on the sacred duties of the Kohanim in the Beit HaMikdash regarding the Korbanot. May he be blessed with success and prosperity, and may he serve in the Beit HaMikdash alongside the other Kohanim when the Mashiach arrives, all in the merit of his dedication to this Masechet. Today’s study, Daf Nun Aleph, is dedicated for the elevation of the soul of Sasson ben Ester, and may his spirit find rest in the Garden of Eden. Additionally, we pray for a complete recovery for Mickey ben Jamie and for success for Binyamin Mordechai ben Ester.
We begin today’s Daf Nun Aleph Amud Bet, starting from the bottom of the page. The discussion centers on the principle of deriving a halachic ruling through a kal va’chomer and subsequently applying it through a binyan av. The Gemara examines whether a concept learned through a kal va’chomer can be extended through a binyan av. The Gemara seeks to clarify the extent to which these methods can be applied, particularly in the context of Kodashim—sacred offerings. Outside of Kodashim, one can generally learn from one case to another without restriction. However, Kodashim has specific halachic rules that must be adhered to, which the Gemara aims to delineate.
The Gemara provides proof for its assertions through examples. For instance, Rava cites Rav Ashi: if a Kohen performs melikah on a bird and it is later found to be a tereifah, it raises questions about its status. Normally, melikah is a valid method of slaughter for Korbanot, yet if the bird is found to have a disqualifying blemish, it cannot be consumed. The Gemara then discusses the implications of a tereifah status on the Kohen and the halachic ramifications of the melikah method.
The Gemara then shifts to a discussion about the status of a nivlat of tahor—a bird that has been slaughtered improperly, rendering it a nevelah. The Gemara establishes that consuming a nevelah not only is prohibited but also renders the consumer tamei. However, the Gemara questions whether a tereifah holds the same status as a nevelah in terms of ritual impurity. Rabbi Meir asserts that a tereifah does not render one tamei, while Rabbi Yehuda argues that it does. The Gemara examines the basis for these differing opinions through kal va’chomer reasoning.
Rabbi Meir formulates his argument by comparing the status of a nivlat behema—a carcass of an animal that has been slaughtered improperly, which is metamei through contact or lifting it. He notes that if the slaughtering of such an animal does not cause ritual impurity when it becomes a tereifah, then by extension, melikah should not cause impurity either. Rabbi Yehuda, however, maintains that all birds, regardless of how they were slaughtered, carry the same impurity as nevelah if they are found to be tereifah.
The Gemara continues to explore the implications of these rulings, presenting a kal va’chomer regarding the shchitah of a bird, which is typically matir—permitting it for consumption. It concludes that if a bird is slaughtered properly and is later found to be a tereifah, it should not render the consumer tamei, similar to how a nevelah does not carry the same status.
Next, the Gemara raises a question about whether a binyan av derived from one case can be applied to another through various methods such as hekesh, gezera shava, and kal va’chomer. The Gemara illustrates this through the law regarding the blood of a korban that becomes pasul after sunset. The Gemara argues that even if the blood is pasul, if it was placed on the altar, it should remain there, and it derives this law from a binyan av based on similar cases.
Ultimately, the Gemara concludes that while certain methods of derivation are valid, the application of a binyan av must be approached with caution, particularly when it comes to Kodashim. The Gemara emphasizes the importance of establishing clear halachic distinctions, ensuring that each case is examined on its own merits and within the framework of the established halachic principles.

