Reference for Bekhorot 119:44

כי אמינא אנא היכי דאיכוין לאפוקי זוגות זוגות היכא דנפק ממילא לא

- Said Raba: The reason is because it so happens that in the Persian system of counting that they call ten One.<span class="x" onmousemove="('comment',' Counting only the Units. Therefore what he calls the first is in fact the tenth.');">³⁵</span>

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