Reference for Eruvin 203:16

א"ל זיל כרוך בודייא ושייר בה טפח למחר פשטה ומוסיף על אהל עראי הוא ושפיר דמי

wide or, even when they are less than<span class="x" onmousemove="('comment',' Lit., 'or also, there is not in them'.');">⁴⁹</span> a handbreadth in width, provided there was no space of three handbreadths intervening between the one and the other,<span class="x" onmousemove="('comment',' So that the rule of labud may be applied.');">⁵⁰</span> it is permissible to bring a that on the morrow<span class="x" onmousemove="('comment',' I.e., on the Sabbath.');">⁵¹</span> and to Spread it over them -<span class="x" onmousemove="('comment',' Though the canvas, or whatever the material, constitutes a tent the construction of which on the Sabbath is forbidden.');">⁵²</span>

Jastrow