Study Zevachim folio 49B with parallel Hebrew-English text, traditional commentary, and modern study tools. Free access to Babylonian Talmud online.
Text Excerpt
אבל כללו גמר מיניה (לצפון) שפיר. אלא אי סבירא לן דלא הוא גמר מכללו ולא כללו גמר מיניה – האי לגופיה איצטריך!
but other matters in its general category learn halakhot from it; in this case with regard to the halakha of slaughtering a guilt offering in the north, it is well. Although some of the halakhot of the guilt offering of a metzora do not apply to the category of guilt offerings in general, it can still serve as the source for the halakha that any guilt offering is disqualified if slaughtered not in the north. But if we hold that in the case of a matter that left its category to teach a new matter, it, the original matter, does not learn halakhot from its general category and its general category does not learn halakhot from it, then this verse is necessary to teach its own halakha.
כיון דאהדריה, אהדריה.
The Talmud answers: Once the verse returned the halakha of the guilt offering of a metzora to the general category by stating “as the sin offering, so is the guilt offering,” it returned it completely. Therefore, when the verse states that it requires slaughter in the north of the Temple courtyard, the phrase is not needed to teach the halakha about the guilt offering of a metzora, and it can be used to teach the halakha about guilt offerings in general.
אמר ליה מר זוטרא בריה דרב מרי לרבינא: אימא כי אהדריה קרא – לגבי מתן דמים ואימורין, דבעי כהונה; אבל שחיטה, דלא בעיא כהונה – לא מיבעי צפון!
Mar Zutra, son of Rav Mari, said to Ravina: Say that when the verse returned the guilt offering of a metzora to the class of standard guilt offerings, that is only with regard to placement of blood on the altar and burning the sacrificial portions, which require priesthood, i.e., only a priest may perform those rites. As the verse states: “For as the sin offering, so is the guilt offering; to the priest” (Leviticus 14:13). But say that slaughter, which does not require priesthood, as even a non-priest may slaughter an offering, does not require that it be done in the north of the Temple courtyard.