Reference for Bava Metzia 3:4
שְׁנַיִם שֶׁהִפְקִידוּ אֵצֶל אֶחָד, זֶה מָנֶה וְזֶה מָאתַיִם, זֶה אוֹמֵר שֶׁלִּי מָאתָיִם וְזֶה אוֹמֵר שֶׁלִּי מָאתָיִם, נוֹתֵן לָזֶה מָנֶה וְלָזֶה מָנֶה, וְהַשְּׁאָר יְהֵא מֻנָּח עַד שֶׁיָּבֹא אֵלִיָּהוּ. אָמַר רַבִּי יוֹסֵי, אִם כֵּן מַה הִפְסִיד הָרַמַּאי. אֶלָּא הַכֹּל יְהֵא מֻנָּח עַד שֶׁיָּבֹא אֵלִיָּהוּ:
If two deposited with him, one a hundred; the other, two hundred [as when they deposited it at the same time, one right before the other] — the first says: "The two hundred is mine"; the second: "The two hundred is mine," he gives the first a hundred and the second a hundred, and the rest is set aside until Eliyahu comes. [For he can tell them: "You were not particular about each other, that the other might claim the two hundred — I, too, did not have to be particular to know who gave me the two hundred." So that it is as if they placed all three hundred in a bundle before him, it not devolving upon him to learn what in it belonged to the one, and what to the other.] R. Yossi said: "If so, what did the deceiver lose!" [He never will admit the truth.] Rather, the whole is set aside until Eliyahu comes.