Reference for Bava Kamma 204:18

אי משום הא לא קשיא כגון דאודעיה לבעל שדה ואודעינהו לסהדי

but if [when buying it] he explicitly made this stipulation<span class="x" onmousemove="('comment',' To the vendor. ');">³⁰</span> he could compel the Exilarch to sell it.<span class="x" onmousemove="('comment',' I.e., to draw up a new deed in the name of the actual purchaser. ');">²⁹</span>

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