Reference for Kiddushin 45:5
אי הכי אימא סיפא בשטר על ידי עצמו על ידי עצמו אין על ידי אחרים לא ואי מדעתו על ידי אחרים אמאי לא
and we learned: One may obtain a privilege for a person in his absence, but cannot so act to his disadvantage.<span class="x" onmousemove="('comment',' Such an action being invalid.');"><sup>5</sup></span> Hence it obviously means with his knowledge [consent], and we are informed this: only through the agency of others [can he be emancipated thus,] but not through his own, thus proving that a slave has no rights of acquisition apart from his master.<span class="x" onmousemove="('comment',' As explained in the note on the Mishnah, q.v.');"><sup>6</sup></span>
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