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The Rambam’s view · Bekhorot 51 · בכורות נ״א
Redemption Payments in the Rulings of the Rambam
How the Rambam codifies the rules of redemption for the firstborn, second tithe, and festival offerings.
Coins Versus Commodities in Monetary Obligations
The Gemara discusses how different sacred payments must be fulfilled. Most redemptions may be executed either with currency or with commodities of equivalent value.
However, the baraita distinguishes between general obligations and specific exceptions. Second tithe (מעשר שני), the temple shekel, and the festival appearance offering (עולת ראייה) require specifically minted silver currency rather than trade goods.
The Mishnah further establishes that the redemption of a firstborn son (פדיון הבן) excludes land, slaves, and promissory notes.
Minted Currency for Tithes and Offerings
The Rambam codifies that second tithe cannot be redeemed with commodities or unminted bullion. An unformed silver ingot (אסימון) lacks official standing and renders any redemption void.
Similarly, a pilgrim bringing funds to purchase a festival appearance sacrifice may not bring commodities instead of silver. The Sages feared the merchant would refuse goods or the funds contain defective dross.
The Kessef Mishneh clarifies that the Rambam adopts the interpretation of Tosafot regarding the pilgrim offering. Minchat Chinukh adds that even an unminted bar of pure silver is forbidden for the festival funds.
וְאֵין פּוֹדִין בְּכֶסֶף שֶׁאֵינוֹ מַטְבֵּעַ אֶלָּא בְּכֶסֶף מְפֻתָּח שֶׁיֵּשׁ עָלָיו צוּרָה אוֹ כְּתָבAnd one may not redeem with silver that is not coinage, but only with minted silver that has an image or writing upon it. (Mishneh Torah, Second Tithes and Fourth Year's Fruit 4:9)
Requirements for Redeeming the Firstborn
For redeeming a firstborn son, the Rambam rules that the five selaim must consist of silver or movable property with intrinsic value.
Real estate cannot be used because it is immovable. Canaanite slaves are disqualified because the Torah equates them to land. Promissory notes (שטרות) are invalid because their paper has no intrinsic financial worth.
If a father attempts redemption using any of these items, the child is not redeemed at all.
לְפִיכָךְ אֵין פּוֹדִין בְּקַרְקָעוֹת וְלֹא בַּעֲבָדִים מִפְּנֵי שֶׁהֵן כְּקַרְקָעוֹת וְלֹא בִּשְׁטָרוֹת לְפִי שֶׁאֵין גּוּפָן מָמוֹן. וְאִם פָּדָהוּ בָּהֶן אֵינוֹ פָּדוּיTherefore one may not redeem with land, nor with slaves because they are like land, nor with promissory notes because their substance is not money; and if he redeemed with them, he is not redeemed. (Mishneh Torah, First Fruits and other Gifts to Priests Outside the Sanctuary 11:6)
Derivations and Written Obligations
The Kiryat Sefer explains the scriptural foundation using the hermeneutical rule of generalization, specification, and generalization (כלל ופרט וכלל). Just as silver is movable property with intrinsic monetary value, all redemption mediums must possess these identical qualities.
If a father writes a promissory note obligating himself to pay five selaim to a kohen, the financial obligation is legally enforceable. Yet even when he later pays that debt, the son is not redeemed.
Ulla explains in the Gemara that Biblically the payment should work, but the Sages decreed it invalid lest people redeem via documents. Rav Nachman concludes that halacha follows the Sages who strictly reject this redemption.
מה הפרט מפורש כסף שהוא דבר המטלטל וגופו ממון אף כל שהוא כך יצאו קרקעות שאינם מטלטל' יצאו עבדים שהוקשו לקרקעותJust as the specific detail is explicitly silver, which is a movable item whose substance is monetary value, so too anything like this; excluding land which is not movable, and excluding slaves who are equated to land. (Kiryat Sefer on Mishneh Torah, First Fruits and other Gifts to Priests Outside the Sanctuary 11:6:1)
Utensils, Distribution, and Practical Halacha
If the father gives a utensil that does not sell for five selaim in the open market, but the kohen accepts it as worth five selaim, the redemption takes effect.
The Kessef Mishneh addresses the Ran's question from Tractate Kiddushin, where a special personal valuation was required. He explains the Rambam holds that so long as an item is worth that amount to someone, a kohen can validly accept it.
The Rambam also rules that if one distributes five selaim among ten priests, whether together or consecutively, he has fulfilled the mitzvah.
In modern practice, fathers redeem their firstborn sons specifically with pure silver coins or movables possessing clear intrinsic value, avoiding any debt instruments or conditional contracts.
נָתַן לוֹ כְּלִי שֶׁאֵינוֹ שָׁוֶה בַּשּׁוּק חֲמִשָּׁה סְלָעִים וְקִבְּלוֹ הַכֹּהֵן בַּחֲמִשָּׁה סְלָעִים הֲרֵי בְּנוֹ פָּדוּיIf he gave him a utensil that is not worth five selaim in the market and the priest accepted it for five selaim, behold, his son is redeemed. (Mishneh Torah, First Fruits and other Gifts to Priests Outside the Sanctuary 11:7)
Redemption requires movable property of intrinsic value or minted coins, while documents and land remain entirely invalid.