Overview
The daf continues two major discussions:
- Why Kohanim and Leviim are exempt from Pidyon HaBen and Peter Chamor.
- Whether the firstborns were sanctified in the wilderness.
- The Mishnah’s new topic: animals giving birth to a different species.
Why Are Kohanim and Leviim Exempt?
The Gemara continues analyzing the exchange in the wilderness whereby the Leviim replaced the Jewish firstborns.
Rava explains:
The sanctity of the Leviim displaced the sanctity of the firstborn Israelites.
Therefore, the descendants of Levi are exempt from:
- Pidyon HaBen.
- Peter Chamor.
The Gemara links the two through the verse:
“אך פדה תפדה את בכור האדם ואת בכור הבהמה הטמאה תפדה“
Anyone included in the obligation of the human firstborn is included in the obligation of the donkey firstborn, and one exempt from the first is exempt from the second.
The Child of a Leviyah
The Gemara challenges:
Why is the son of a Leviyah exempt from Pidyon HaBen?
After all, not every Levite participated equally in the original census.
The Gemara answers:
The Torah made the exemption depend upon פטר רחם (opening the womb), not on participation in the census.
Therefore:
A Leviyah who gives birth to a firstborn son does not require redemption.
Why Is Aharon Included?
Aharon was not counted among the ordinary Leviim in the census.
One might think Kohanim should therefore be excluded from the exemption.
The Gemara answers:
All Leviim were compared to one another.
Furthermore, Rabbi Yehoshua ben Levi taught:
In twenty-four places Scripture refers to Kohanim as Leviim.
Therefore Kohanim share the same exemption.
The Question of the Extra 300 Leviim
A Roman official named Kontrokos asked Rabban Yochanan ben Zakkai:
The census gives:
- 22,300 Leviim.
- Yet only 22,000 were used to redeem Israel’s firstborn.
What happened to the extra 300?
Rabban Yochanan ben Zakkai answered:
Those 300 were themselves firstborns.
A firstborn Levite could redeem himself, but:
A firstborn cannot redeem another firstborn.
Abaye explains:
It is enough that a firstborn removes his own sanctity.
Moshe and the Half-Shekel Accounting
Kontrokos raised another challenge.
The Torah’s numbers seem to indicate an extra amount of silver in the half-shekel collections.
He provocatively asked whether Moshe:
- Was a thief,
- Was a gambler,
- Or could not do arithmetic.
The Gemara rejects this entirely.
Rabban Yochanan explains:
Moshe was a trustworthy treasurer and a master accountant.
The discrepancy comes from the fact that:
A sacred maneh was double the ordinary maneh.
From several verses the Gemara derives:
- The sacred maneh contained twice the value of a regular maneh.
- Measures could be increased.
- The increase was one-sixth added externally.
Why Was the Donkey Chosen?
Rabbi Chanina relates that he asked Rabbi Eliezer:
Why is the firstborn donkey redeemed, whereas firstborn horses and camels are not?
Rabbi Eliezer gave two answers.
- Divine decree
It is simply the Torah’s decree.
- Historical reason
When Israel left Egypt:
They carried Egypt’s silver and gold on donkeys.
The donkey played a special role in the Exodus and was therefore given special status.
Meaning of “Refidim” and “Shittim”
Rabbi Chanina also asked Rabbi Eliezer:
Why is the place called Refidim?
Rabbi Yehoshua explains:
Israel weakened (רפו) their hands from Torah study.
Why is the place called Shittim?
Rabbi Yehoshua explains:
Israel engaged in acts of folly (שטות) there, culminating in the sin with the daughters of Moav.
New Mishnah: Different Species Births
The Mishnah introduces a new topic.
A cow gives birth to a donkey-like animal.
A donkey gives birth to a horse-like animal.
The Mishnah rules:
Such offspring are exempt from Bechor sanctity.
The Torah says:
“פטר חמור“
twice.
From this Chazal derive:
Both the mother and the offspring must be donkeys.
The Kashrut Principle
The Mishnah then states a broader rule:
A kosher animal giving birth to something resembling a non-kosher species
The offspring is:
Permitted.
A non-kosher animal giving birth to something resembling a kosher species
The offspring is:
Forbidden.
Because:
היוצא מן הטמא טמא
What comes from a non-kosher source is non-kosher.
היוצא מן הטהור טהור
What comes from a kosher source is kosher.
The Source for Mixed Species and Bechor
The Gemara compares this Mishnah with the Mishnah in Chullin concerning:
- A sheep giving birth to a goat-like offspring.
- A goat giving birth to a sheep-like offspring.
Rav Yehudah derives from:
“בכור שור“
“בכור כשב“
“בכור עז“
that:
The mother must be that species and the offspring must be that species.
Rabbi Yose HaGelili derives the same principle differently and uses the word:
“אך“
to include cases where some signs of the original species remain.
Why Repeat Shor, Kesev, and Ez?
The Gemara asks why the Torah separately discusses the sacrificial fats of:
- A firstborn ox,
- A firstborn sheep,
- A firstborn goat.
Each possesses a unique feature:
- Ox: associated with libations.
- Sheep: associated with the fatty tail.
- Goat: associated with certain idolatry offerings.
Therefore none could have been learned from the others.
Big Idea of the Daf
The daf connects two themes:
- The unique role of the tribe of Levi as the replacement for Israel’s firstborns.
- The Torah’s requirement that sanctity follows biological identity.
A firstborn receives Bechor status only when:
Both the mother and offspring belong to the proper species designated by the Torah.