Reference for Eruvin 118:13

בעי מיניה רב אמי בר אדא הרפנאה מרבה סולם מכאן ופתח מכאן מהו א"ל הכי אמר רב סולם תורת פתח עליו

R.<span class="x" onmousemove="('comment',' Wanting in MS.M.');">³³</span> Ammi B'Adda of Harpania enquired of Rabbah,<span class="x" onmousemove="('comment',' MS.M. adds: 'b. Abbuha'.');">³⁴</span> 'What is the ruling where a town had a ladder<span class="x" onmousemove="('comment',' Whereby the town wall could be scaled.');">³⁵</span> on one side and a gate on the other? '<span class="x" onmousemove="('comment',' Is the town to be treated as having two gates?');">³⁶</span>

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