After the Gemara establishes the root of the debate between Rabbi Eliezer and the Rabbis regarding a koy, Rav Papa clarifies the specific type of koy they dispute concerning the prohibition of slaughtering a parent and its offspring on the same day (oto v'et beno) and the distribution of priestly gifts (matnot kehuna). He also explains that the Mishna's ruling—which prohibits slaughtering a koy on Yom Tov due to the uncertainty of whether its blood requires covering (kisuy hadam)—aligns specifically with the Rabbis' position. The Gemara then introduces three other opinions regarding the exact definition of a koy.

Rabbi Oshaya notes that the Mishna does not align with the opinion of Rabbi Shimon, who views any slaughter that is not fit for consumption—including the slaughter of sacrifices in general, since it does not permit the meat until the blood is sprinkled—as an invalid slaughter (shechita she'eina reuya). Consequently, under his view, one who slaughters an animal in the Temple and its offspring on the same day does not violate the prohibition of "you shall not slaughter it and its offspring on the same day" (oto v'et beno lo tishchatu b'yom echad).

The Gemara questions why the Mishna omits the rule that one receives lashes for slaughtering an animal in the Temple courtyard whose time has not yet come (mechusar zman—because its mother was already slaughtered today) on account of slaughtering an unfit animal in the Temple, and offers two answers to resolve this.