Reference for Eruvin 27:1

<big><strong>גמ׳</strong></big> טפח טפח ומחצה בעי

<big><b>GEMARA: </b></big>ONE HANDBREADTH! Is not a handbreadth and a half required?<span class="x" onmousemove="('comment',' To support an ariah of that size. ihckn vbck');">¹</span> - Since it is wide enough to hold [an ariah of the size of] one handbreadth one may provide a foundation<span class="x" onmousemove="('comment',' particip. denom. of , lit., he makes it a brick (foundation) '.');">²</span>

Jastrow

Jastrow