Reference for Bava Kamma 12:23

דלא מצי אמר ליה תא את גבי מזיבורית אלא גבי ממיטב

in] a case where the defendant's estate consists of good and bad qualities, and the plaintiff's estate likewise comprises good quality, but the bad of the defendant's estate is not so good as the good quality of the estate of the plaintiff;<span class="x" onmousemove="('comment',' The bad quality could not thus be tendered. ');">¹⁹</span>

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