The masechet so far, chapter by chapter

Masechet Bekhorot addresses the laws of sanctifying, redeeming, and slaughtering firstborn animals and humans, as well as the disqualifications of sacred offerings. It currently examines the detailed catalogue of physical blemishes that permit a firstborn animal to be slaughtered outside the Temple.

Chapter 1 – הלוקח עובר חמורו: Firstborn Donkeys and Their Redemption

This chapter establishes the rules for the firstborn of a donkey and exemptions resulting from gentile partnership. An owner redeems a firstborn donkey by giving a lamb or kid to a priest. If the owner refuses to redeem the donkey, its neck must be broken.

A donkey owned in partnership with a gentile is exempt from firstborn status.
One redeems a firstborn donkey with a sheep or goat, which is given to a priest.
If an owner refuses to redeem a firstborn donkey, he must break its neck and bury it.

Chapter 2 – הלוקח עובר פרתו: Firstborn Kosher Animals and Disputed Births

This chapter examines male firstborn cattle, sheep, and goats, which possess inherent bodily sanctity. Any share of gentile ownership in the mother or fetus removes firstborn obligations. The Sages also resolve uncertain cases involving simultaneous twin births or caesarean deliveries.

Any gentile ownership in a kosher mother animal or fetus removes its firstborn sanctity.
When twin male lambs emerge together, Rabbi Akiva rules the priest receives the leaner twin.
Neither an animal born by caesarean section nor the sibling born after it receives firstborn sanctity.

Chapter 3 – הלוקח בהמה: Purchased Animals, Miscarriages, and Shearing Restrictions

This chapter details physiological indications that an animal already gave birth, such as fluid discharges or nursing. It outlines the strict prohibition against shearing or working a firstborn animal. Shepherds may pluck hair only to inspect a blemish or make space for ritual slaughter.

Murky uterine discharge indicates a prior fetus, exempting subsequent births from firstborn sanctity.
A nursing mother animal is presumed to have given birth, exempting her later offspring.
One may pluck hair from the neck only to inspect a blemish or slaughter the animal.

Chapter 4 – עד כמה: Rearing Periods, Expert Inspectors, and Untrusted Vendors

An owner must care for a firstborn animal for a set duration before transferring it to a priest. Blemishes must be examined by an authorized expert, who may collect only compensation for lost work time. Individuals suspected of violating religious laws face commercial restrictions and are disqualified as judges or witnesses.

Owners must care for a firstborn sheep for thirty days and cattle for fifty days.
An expert inspector may receive a fixed fee, but judges taking wages have their rulings nullified.
Merchants suspected of selling forbidden firstborn meat are disqualified from testifying about such matters.

Chapter 5 – כל פסולי המוקדשין: Selling, Disqualifying, and Damaging Firstborn Sacrifices

Disqualified consecrated offerings are sold publicly, but blemished firstborn animals may only be sold privately at home without official weighing. Deliberately inflicting a blemish on a firstborn is strictly prohibited, and the owner cannot slaughter it on that account. Laymen may authorize slaughter only for obvious, permanent bodily injuries when no expert is present.

Blemished firstborn meat is sold only at home by estimate, not weighed in butcher shops.
Anyone who intentionally blemishes a firstborn animal cannot slaughter it until another blemish develops naturally.
Three laymen may permit slaughtering an animal with an obvious permanent blemish like a severed leg.

Chapter 6 – על אלו מומין: Physical Blemishes Permitting Outside Slaughter

This chapter catalogues specific, permanent defects of the ears, eyes, lips, gums, genitals, and limbs. Only exposed, non-healing flaws in cartilage or bone qualify as blemishes that permit slaughter outside the Temple. The Sages evaluate which ocular lesions, constant tears, and skeletal irregularities remain permanent.

An ear blemish requires cartilage pierced the size of a bitter vetch seed or a split.
A tevallul, a thread bisecting the iris, is a blemish only when white tissue enters the pupil.
Rabbi Akiva permits eating a firstborn whose retained testicle remained hidden after kneading.
Extra or missing limbs on forelegs are blemishes, but on hind legs render an animal fatally injured [tereifah].

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