Talmud Kiddushin — Eved Kena'ani and Agency
Kiddushin 23a:3
The Talmud discusses the maxim 'זכין לאדם שלא בפניו' — one may acquire benefit for another person in their absence — as a distinct mechanism from formal shelihut. This concept operates independently of the laws of agency and applies even where standard shelihut does not function.
וְקוֹנֶה עַצְמוֹ בְּכֶסֶף כּוּ׳ בְּכֶסֶף עַל יְדֵי אֲחֵרִים. אִין, אֲבָל לֹא עַל יְדֵי עַצְמוֹ. בְּמַאי עָסְקִינַן? אִילֵימָא שֶׁלֹּא מִדַּעְתּוֹ, מִכְּדֵי שְׁמַעְנָא לֵיהּ לְרַבִּי מֵאִיר דְּאָמַר: חוֹב הוּא לְעֶבֶד שֶׁיֵּצֵא מִיַּד רַבּוֹ לְחֵירוּת. וּתְנֵינָא: זָכִין לָאָדָם שֶׁלֹּא בְּפָנָיו, וְאֵין חָבִין לוֹ אֶלָּא בְּפָנָיו. וַחֲכָמִים אוֹמְרִים: בְּכֶסֶף עַל יְדֵי עַצְמוֹ. בְּכֶסֶף עַל יְדֵי עַצְמוֹ – אִין, עַל יְדֵי אֲחֵרִים – לָא. אַמַּאי? נְהִי נָמֵי דְּשֶׁלֹּא מִדַּעְתּוֹ, מִכְּדֵי שְׁמַעְנָא לְהוּ לְרַבָּנַן דְּאָמְרִי: זְכוּת הוּא שֶׁיֵּצֵא מִתַּחַת יָד רַבּוֹ לְחֵירוּת, וּתְנֵינָא: זָכִין לְאָדָם שֶׁלֹּא בְּפָנָיו, וְאֵין חָבִין לוֹ אֶלָּא בְּפָנָיו.
§ The mishna teaches that a slave can acquire himself by means of money, and Rabbi Meir rules that this money must be given by others. The Gemara comments: This ruling indicates that with money given by others, yes, the slave can be freed in this manner, but not by giving money himself. The Gemara inquires: With what are we dealing? If we say that this is referring to emancipating the Canaanite slave without his consent, that creates a difficulty. After all, we have heard that Rabbi Meir is the one who says: It is against the slave’s interest to leave his master’s authority for freedom, as he thereby loses out on certain benefits; and we learned in a baraita: One can act in a person’s interest in his absence, but one can act against a person’s interest only in his presence. How can one act against the slave’s interest and free him without his consent? § The mishna teaches: And the Rabbis say: The slave can be freed by means of money given by himself. The Gemara analyzes this ruling: By means of money given by himself, yes, he can be emancipated in this manner, but with money given by others, no, he cannot be emancipated in this manner. The Gemara asks: Why not? Although this was indeed performed without the slave’s consent, after all, we heard that the Rabbis say: It is in a slave’s interest to go out from the master’s authority to freedom. And we learned in a baraita: One can act in a person’s interest in his absence, but one can act against a person’s interest only in his presence. Why, then, isn’t he freed when others give the money, considering that this change of status is to his advantage?