Reference for Eruvin 32:15

ליעביד פחות משלשה וחבל משהו פחות משלשה וחבל משהו פחות מארבעה וחבל משהו

<big><b>GEMARA: </b></big>Said R'Hamnuna in the name of Rab: Behold the Rabbis have laid down<span class="x" onmousemove="('comment',' In the Mishnah supra 15b.');">³⁰</span> that if the standing parts [of a partition made up] of vertical [stakes]<span class="x" onmousemove="('comment',' And the like. The trappings of cattle (v. previous note) are usually arranged in a vertical position.');">³¹</span> exceed the gaps [the fence] is valid.<span class="x" onmousemove="('comment',' Lit., 'a standing'.');">³²</span>

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