Dividing Brothers and the Deceased Father's Firstborn Debt

When a father dies leaving twin sons of uncertain birth order, Tannaim debate whether dividing the inheritance frees them from redeeming the firstborn.

The Case of the Unidentified Firstborn

A woman who had not previously given birth bears twin sons, and no one knows which infant emerged first. Because one of them is certainly a firstborn, the father must give five silver sela coins to a kohen (priest) to fulfill the mitzvah of redemption,. If one twin dies within thirty days of birth, the father is exempt from payment, as he can plead that the deceased infant was the firstborn,.

The Mishnah presents the central dilemma: the father dies without redeeming either son, leaving both boys alive. The brothers proceed to divide the father's estate between themselves before paying the kohen. Does the kohen still have the legal power to extract the redemption payment from their inherited portions?

מֵת הָאָב וְהַבָּנִים קַיָּימִים, רַבִּי מֵאִיר אוֹמֵר: אִם נָתְנוּ עַד שֶׁלֹּא חָלְקוּ — נָתָנוּ, וְאִם לָאו — פְּטוּרִין. רַבִּי יְהוּדָה אוֹמֵר: נִתְחַיְּיבוּ נְכָסִים.

If the father died and the sons are alive, Rabbi Meir says: If they gave before they divided, they gave; but if not, they are exempt. Rabbi Yehuda says: The property became obligated. (Bekhorot 48a:2)

Rabbi Meir and Rabbi Yehuda Disagree

Rabbi Meir rules that if the brothers already divided their inheritance, they are פטורין (exempt) from paying the kohen,. If they paid before dividing, the payment stands, but after dividing, neither brother can be compelled to pay. Each brother can deflect the kohen's claim by insisting that the other brother was the firstborn,.

Rabbi Yehuda disagrees and holds that the father's estate was encumbered for the redemption sum. Therefore, the brothers חייבין לפרוע בין שניהם (are obligated to pay together) out of the estate regardless of whether they divided it.

נתחייבו - בו נכסי האב לכהן כבעל חוב וחייבין לפרוע בין שניהם:

[The father's] property became obligated to the priest for it as to a creditor, and they are obligated to pay it between the two of them. (Rashi on Bekhorot 48a:2:2)

The Search for the True Circumstances

The Gemara seeks to clarify when the father died. If the father died after thirty days, the property had already become encumbered during his lifetime, making Rabbi Meir's exemption hard to understand. If the father died within thirty days, the personal obligation never attached to the father, so each brother can deflect the kohen whether they divided or not.

Rabbi Yirmeya suggests that an undivided estate resembles partners who face an inescapable claim from a single creditor. Rava rejects this comparison, noting that a debtor's property functions merely as an ערב (guarantor) and cannot be seized without primary liability established against the person.

Rava concludes that the father died after thirty days, but the entire estate consisted of exactly five sela coins.

אָמַר רָבָא: מִכְּדֵי נִכְסֵי דְּבַר אִינִישׁ אִינּוּן עָרְבִין בֵּיהּ, מִי אִיכָּא מִידֵּי דִּלְדִידֵיהּ לָא מָצֵי תָּבַע לֵיהּ, וּלְעָרֵב מָצֵי תָּבַע לֵיהּ?

Rava said: Now consider, a person's property is a guarantor for him; is there any case where one cannot claim from the debtor himself, and yet he can claim from a guarantor? (Bekhorot 48a:6)

Inheritance, Partition, and Oral Debts

Rava explains the dispute by invoking the rule of Rav Asi. Rav Asi holds that brothers who divide an estate are מֶחֱצָה יוֹרְשִׁין וּמֶחֱצָה לָקוֹחוֹת (half heirs and half purchasers) regarding their received portions, due to doubt over retroactive designation,.

Furthermore, a financial obligation ordained by the Torah has the status of a מלוה על פה (oral loan) without a written deed. Rav Pappa established that a creditor on an oral loan may collect from heirs, but never from purchasers,.

Because the five-sela estate was divided, each son holds only half of his portion as an heir. Across both sons, only two and a half sela are subject to collection as inheritance.

לָאו כִּכְתוּבָה בִּשְׁטָר דָּמְיָא, וּדְכוּלֵּי עָלְמָא אִית לְהוּ דְּרַב פָּפָּא, דְּאָמַר רַב פָּפָּא: מִלְוָה עַל פֶּה גּוֹבֶה מִן הַיּוֹרְשִׁין וְאֵינוֹ גּוֹבֶה מִן הַלָּקוֹחוֹת.

[A debt in the Torah] is not considered like one written in a deed, and everyone accepts that which Rav Pappa says: An oral debt is collected from heirs and is not collected from purchasers. (Bekhorot 48b:1)

Whole Coins and the Estate's Status

The Gemara initially suggests that Rabbi Yehuda allows partial fulfillment, while Rabbi Meir requires five sela together. A baraita refutes this proposal by showing that Rabbi Yehuda also requires a full five sela.

The Gemara concludes that all parties agree the Torah demands חָמֵשׁ וְלֹא חֲצִי חָמֵשׁ (specifically five whole sela coins). Their true argument concerns the division of the estate. Rabbi Meir adopts the positions of Rav Asi and Rav Pappa, leaving the kohen with only two and a half collectible sela, which fails the requirement of five coins. Rabbi Yehuda rejects that classification here, treating the brothers as full heirs so that all five sela remain subject to the father's debt,.

אֶלָּא, דְּכוּלֵּי עָלְמָא חָמֵשׁ וְלֹא חֲצִי חָמֵשׁ, וְהָכָא בִּדְרַב אַסִּי וְרַב פָּפָּא קָמִיפַּלְגִי.

Rather, everyone agrees that it requires five and not half of five, and here they disagree with regard to the statements of Rav Asi and Rav Pappa. (Bekhorot 48b:6)

The Final Halachic Ruling

The Rambam rules in accordance with Rabbi Yehuda. If the father died leaving twin sons of uncertain priority, the five sela יִנָּתֵן מִן הַנְּכָסִים (must be given from the estate), whether the brothers divided the property or not.

The Rambam applies this rule even if the father died within thirty days of the birth,. However, the Tur maintains that if the father died within thirty days, the sons remain exempt because the personal obligation never attached to the father's property during his lifetime.

מֵת הָאָב בֵּין בְּתוֹךְ שְׁלֹשִׁים יוֹם בֵּין אַחַר שְׁלֹשִׁים יוֹם. בֵּין שֶׁלֹּא חָלְקוּ הָאַחִים בֵּין שֶׁחָלְקוּ. יִנָּתֵן מִן הַנְּכָסִים חֲמִשָּׁה סְלָעִים לַכֹּהֵן שֶׁכְּבָר נִתְחַיְּבוּ הַנְּכָסִים:

If the father died—whether within thirty days or after thirty days, whether the brothers did not divide or did divide—five sela must be given from the estate to the priest, because the property was already obligated. (Mishneh Torah, First Fruits and other Gifts to Priests Outside the Sanctuary 11:20)

Because the redemption of a firstborn requires five complete sela coins, the estate pays the kohen only if the dividing brothers remain encumbered heirs rather than exempt purchasers.

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