Masechet Zevachim is sponsored by Esther Kremer in loving memory of her father, Manny Gross on his third yahrzeit. "He exemplified a path of holiness and purity, living with kedushah in his everyday life."

Today's daf is sponsored by Judi Felber in loving memory of her mother, Yocheved bat Zvi and Sara, on her 4th yahrzeit.

If one takes an animal that was designated for a specific sacrificial purpose and slaughters it with the intention that it be used for a different type of offering (shelo lishma), the sacrifice is not invalidated. It must still be offered according to its original designation. However, it does not fulfill the obligation of the person who brought the sacrifice.

There are exceptions to this rule - cases in which slaughtering with the wrong intent completely disqualifies the offering. The Mishna records four differing opinions regarding these exceptions:

1. Tana Kamma holds that a sin offering (chatat) and a Passover offering (korban Pesach) - when brought at the proper time (the afternoon of the 14th of Nissan, or possibly even the morning) - are disqualified if slaughtered with incorrect intent.
2. Rabbi Eliezer adds the guilt offering (asham) to the list, arguing that it is similar in nature to the sin offering.
3. Yosi ben Honi expands the rule further, stating that any sacrifice slaughtered with the mistaken intent that it be offered as a sin offering or a Passover offering on the 14th of Nissan is disqualified.
4. Shimon, brother of Azaria, maintains that if a sacrifice is slaughtered with the intent that it be offered as a higher-level offering than originally designated, it remains valid. However, if the intent is to downgrade it to a lower-level offering, the sacrifice is disqualified. The Mishna provides examples of what constitutes higher and lower offerings.

The Gemara raises a question: Why does the Mishna use the word "ela" ("but") instead of "ve" ("and") in the phrase "but [a sacrifice slaughtered with the wrong intent] does not fulfill the owner's obligation"? The answer given is that although the sacrifice does not fulfill the owner's obligation, its original sanctity and designation remain intact. Therefore, the remaining sacrificial rites must be performed in accordance with its original purpose. This explanation aligns with a statement made by Rava, and two reasons are offered to support this ruling—one derived from a biblical verse, and the other based on logical reasoning.

A further question arises: If a sacrifice is slaughtered without any specific intent, is that considered "no intent" or does it count as "intent"? Rava infers from the Mishna that such a case is treated as if it were done with intent. However, he notes a contradiction with the laws of lishma regarding a get (divorce document), which must be written specifically for the woman being divorced. Why, then, is the law different in each case?

After addressing this question, the Gemara investigates the sources that underpin Rava's apparent contradiction: first, that a sacrifice brought without specific intent is still valid; and second, that a get lacking explicit intent is invalid.