Reference for Eruvin 179:11

איתמר ספינה רב אמר מותר לטלטל בכולה ושמואל אמר אין מטלטלין בה אלא בד' רב אמר מותר לטלטל בכולה

- There<span class="x" onmousemove="('comment',' Where Samuel was dealing with the view of the Rabbis who regard each roof as a separate domain.');">⁴⁵</span> the area was not bigger than two beth se'ah<span class="x" onmousemove="('comment',' Since the walls of each individual roof, which is smaller than two beth se'ah, are deemed to be extended upwards.');">⁴⁶</span> but here it<span class="x" onmousemove="('comment',' The area of all the roofs according to R. Meir and that of the single roof according to the Rabbis.');">⁴⁷</span> is bigger than two beth se'ah, and, since those walls<span class="x" onmousemove="('comment',' Of the houses.');">⁴⁸</span> were made for dwelling purposes only below<span class="x" onmousemove="('comment',' Within the houses themselves.');">⁴⁹</span> but not on the roof' area above,<span class="x" onmousemove="('comment',' Lit., 'above they are not made'.');">⁵⁰</span> the latter is like a karpaf bigger than two beth se'ah, that was not surrounded by walls for dwelling purposes, and in any karpaf bigger than two beth se'ah that was not surrounded by walls for dwelling purposes, no objects may be moved except within four cubits. It was stated: As regards a ship, Rab ruled: It is permissible<span class="x" onmousemove="('comment',' Even where it was bigger than two beth se'ah.');">⁵¹</span> to move objects about throughout its area, and Samuel ruled: Objects may be moved only within four cubits.' Rab ruled: It is permissible to move objects about throughout its area'

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