Bekhorot 47 – בכורות מ״ז | Daf Yomi with Rashi, Tosafot, the Rambam and halacha

What Bekhorot 47 teaches

Rabbi Yochanan holds prior children born in gentility disqualify later sons from inheriting a double portion.
A disqualified chalal son must redeem himself if his priestly father died within thirty days of birth.
The first tanna denies firstborn status for both inheritance and redemption to caesarean-born sons and their younger brothers.

The sugyot

Rabbi Yochanan maintains that the forehead alone establishes firstborn status, because the Torah’s recognition requirement for inheritance is independent of facial identification.
Rabbi Yochanan and Reish Lakish debate whether a convert's prior children disqualify a subsequent son from the firstborn inheritance, which the Gemara aligns with rabbinic consensus.
The Gemara examines whether the exemption from redemption of the firstborn follows paternal lineage, maternal tribal status, or the mother's womb.
The Gemara examines whether a חלל son of a כהן must redeem himself if his father died within thirty days, concluding he must.
A doubtful firstborn receives no double portion, and mutual power of attorney fails unless the claimants were recognized before being intermingled.
The Mishnah defines non-viable miscarriages that do not disrupt firstborn status, and debates the status of a caesarean birth and his successor.
A caesarean child and his subsequent vaginally born brother are both excluded from inheritance and redemption because neither fulfills the full biblical criteria.
Rabbi Shimon deems a Caesarean son firstborn for inheritance as a valid birth, and the naturally born second son firstborn for redemption.

Halachot from the daf

Facial identification for permitting remarriage versus recognition of a firstborn
Firstborn inheritance rights for a convert with children from gentile status
Fulfillment of procreation for a convert who had children before converting
Exemption from redemption for son of Levite or priest's daughter and Israelite
Redemption of son of Levite or priest's daughter impregnated by a gentile
Right of a disqualified Levite woman to eat first tithe
Redemption of a חלל son whose priest father died
Claiming firstborn inheritance via authorization when identity or birth order is doubtful
Redemption of a son born after an unformed miscarriage
Inheritance rights of a caesarean-born son and the subsequent son
Redemption obligation of a caesarean-born son and the subsequent son
Firstborn status of a son delivered by caesarean section
Firstborn status of a son born naturally after a caesarean delivery
Redemption and inheritance for a son born after a caesarean section

Gems from the Daf

Learn Bekhorot 47 sugya by sugya on Super Daf: the Gemara in Hebrew and English with Rashi, Tosafot, the Rishonim, the Rambam and the Shulchan Arukh woven in. Free.