Reference for Eruvin 38:3

כשלש עשרה טפי הויין משום דבעי למתני כארבע עשרה וכארבע עשרה הא לא הויא אמר רב פפא יתירות על שלש עשרה ואינן מגיעות לארבע עשרה

But there are not really 'about fourteen', [are there]?<span class="x" onmousemove="('comment',' Obviously not. As the number thirteen and a third was said to be 'about thirteen' because it exceeded the latter by one third only, was it proper to describe it also in the same context, as 'about fourteen' which exceeds it by two thirds?');">⁶</span> - R'Papa replied: [The meaning is:] More than thirteen but less than<span class="x" onmousemove="('comment',' Lit., 'and they do not reach'.');">⁷</span> fourteen.

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