Reference for Bekhorot 79:5

תרתי למה לי

So that while the workmen used to undertake their tasks according to the smaller cubit [of Moses] but executed in accordance with the large, in order that it should not come to commit sacrilege.<span class="x" onmousemove="('comment',' Illegally benefiting from a sacred object. For if the workmen followed the Mosaic cubit, since it is not always possible to be exact, there was a fear that what was actually holy might be used in a secular manner.');">²</span>

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