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1. A bird that was Nirva, or was worshiped as an Avodah Zarah, is Pasul as a Korban.
2. A bird which develops a Mum is valid as a Korban.
3. If a person was obligated to bring an Ayil or a Keves and he brought a Palgas (a lamb in its thirteenth month), he does not fulfill his Neder, but he must bring the Nesachim of an Ayil.
4. According to Rebbi Yochanan, a Palgas is neither a Keves nor an Ayil. According to Bar Pada, the status of a Palgas is a Safek.
5. If a person vows to bring an Ayil or a Keves, and he brings a Palgas, there is a doubt about whether he fulfills his Neder, according to Bar Pada.
6. If one vows to bring the breads of a Korban Todah, he must bring a Korban Todah with the breads.
7. If a person vows to bring breads of Chametz or Matzah for the Korban Todah of his friend, and he brings sourdough that developed cracks similar to the horns of a locust, there is a doubt about whether he fulfills his Neder, according to Rebbi Meir.
8. Shechitah is done to a Parah Adumah, and not Arifah. Arifah is done to an Eglah Arufah, and not Shechitah.
A BIT MORE
1. However, the concept of a Rove'a does not apply to a bird.
2. However, if the bird is missing a limb, it is Pasul.
3. A Palgas is an intermediate stage. It is too mature to be a Keves, and it is not mature enough to be an Ayil.
4. According to Rebbi Yochanan, a Palgas is neither a Keves nor an Ayil. Nevertheless, a Gezeiras ha'Kasuv states that the Nesachim of an Ayil are brought with a Palgas. According to Bar Pada, a Palgas is a Safek, and the Nesachim of an Ayil must be brought with a stipulation that if it is a Keves, the extra Nesachim will be a Nedavah.
5. There is a doubt whether, according to Bar Pada, a Palgas is a Safek Keves and Ayil, and it is definitely one of the two, or whether it has a unique status and is neither a Keves nor an Ayil.
6. A person is aware that the breads of a Korban Todah are not brought without a Korban Todah. Hence, when he vowed to bring the breads, he intended to bring them along with a Korban Todah.
7. When sourdough develops cracks, it is called Si'ur, and it must be burned before Pesach (according to Rebbi Yehudah), but there is no Chiyuv Malkus for eating it. There is a doubt about whether, according to Rebbi Yehudah, Si'ur is Safek Chametz or Matzah but is definitely one of the two, or whether it might have a separate status and is neither Chametz nor Matzah.
8. If Arifah is done to a Parah Adumah, or Shechitah to an Eglah Arufah, it is Pasul.
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