Reference for Bava Batra 339:16

ואיבעית אימא לעולם לא תיפוך אלא הכא בלברר קמיפלגי

Rabbi. Rabban Simeon b. Gamaliel said: Let them<span class="x" onmousemove="('comment',' Creditor and debtor. ');">³⁰</span> divide it.<span class="x" onmousemove="('comment',' The amount of the debt, the debtor repaying only a half of the claim. ');">³¹</span>

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