Reference for Bava Metzia 7:9

אלא פריך הכי מה להצד השוה שבהן שכן אינן בתורת הזמה תאמר בעדים שישנן בתורת הזמה

[The objection, however, is at once raised:] Is the defendant really presumed to be a liar when contradicted by witnesses? Has not R. Idi b. Abin said that R. Hisda said: He who denies a loan<span class="x" onmousemove="('comment',' And is refuted by witnesses before swearing. whether he denies the whole loan or only part of it. ');">⁹</span>

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