Overview: The Practical Side of Oso V’es Beno
Chullin 83 concludes the perek of אותו ואת בנו and focuses on real-life situations where people might accidentally violate the prohibition. The daf discusses when a seller must warn buyers that they are purchasing a mother and offspring, identifies special times of the year when this warning is required, and clarifies what the Torah means by “one day.” It then begins the next perek on Kisuy HaDam (covering the blood).
The Four Times a Seller Must Give Notice
The Mishnah teaches that there are four special occasions during the year when a seller who has sold a mother or offspring must inform the next buyer that the related animal was already sold for slaughter. The reason is that on these occasions people commonly prepare large festive meals and are likely to slaughter their animals immediately. Therefore, there is a heightened risk of violating אותו ואת בנו.
Rabbi Yehuda HaNasi derives this from the Torah’s phrase**”ביום אחד”** (“on one day”), explaining that certain special days require public awareness and announcement.
If the Seller Says Nothing
The Gemara explains that if no warning was given, the buyer may assume that there is no issue and may proceed with slaughter. The responsibility to provide the information rests on the seller during those special times when slaughter is expected.
The Wedding Case
The Gemara discusses a case in which one family purchases the mother animal and another purchases the offspring for a wedding celebration. It notes that, traditionally, the groom’s family would often purchase the larger animal while the bride’s family would purchase the smaller one. Because both families may be preparing for the same feast, special care is needed to avoid violating אותו ואת בנו.
Compelling the Butcher to Slaughter
The Mishnah also discusses situations where a butcher may be required to complete a slaughter even when only a small amount of meat has been ordered. These cases arise on major festival occasions when there is a strong expectation that meat will be available for the holiday meals.
What Does “One Day” Mean?
A major discussion clarifies the Torah’s phrase:
“You shall not slaughter it and its offspring on one day.”
The Gemara explains that for this prohibition, the halachic day follows the standard Torah pattern:
Night comes first, followed by the day.
Thus, the prohibition extends from one evening until the following evening.
Beginning a New Perek — Kisuy HaDam
At the end of the daf, the Gemara begins the next chapter, which deals with Kisuy HaDam, the mitzvah of covering the blood after slaughtering a bird or wild animal. The Mishnah teaches that this mitzvah applies:
- In Eretz Yisrael and outside Eretz Yisrael
- When the Beit HaMikdash stands and when it does not
- To birds and wild animals
- To a koy because of its doubtful status
The Mishnah also rules that one should not slaughter a koy on Yom Tov because covering its blood would involve a doubtful obligation.
Big Idea of the Daf
The central theme of Chullin 83 is:
Halachah not only prohibits wrongdoing, it creates practical systems of communication to help people avoid mistakes in everyday life.
Final Summary
Chullin 83 concludes the perek of Oso V’es Beno by discussing when sellers must warn buyers that they have purchased a mother and offspring, especially during four major times of the year when immediate slaughter is expected. The daf clarifies the definition of “one day” and emphasizes the practical measures needed to prevent violations. It then begins the new perek on Kisuy HaDam, introducing the laws of covering the blood of birds and wild animals after shechitah.