Reference for Eruvin 46:9

איכא בינייהו ריבועא דריבעוה רבנן:

R'JOSE RULED etc. It was stated:<span class="x" onmousemove="('comment',' By Amoras.');">¹⁵</span> R'Joseph laid down in the name of Rab Judah who had it from Samuel: The halachah is in agreement with R'Jose;<span class="x" onmousemove="('comment',' That a non-squared area is also permitted.');">¹⁶</span>

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