Commentary for Eruvin 4:4
ואיבעית אימא כי כתיב קלעים חמש עשרה אמה לכתף בגובהה הוא דכתיב
and again it is written: And so for the other side; on this hand and that hand by the gate of court were hangings of fifteen cubits,<span class="x" onmousemove="('comment',' Ex. XXXVIII, 15. From the three texts it follows that the width of the court was fifty cubits (Ex. XXVII, 18) and that it had hangings of fifteen cubits in width at each end (ibid. 14 and XXXVIII, 15) , thus leaving an opening of (50 - 2 X 15 =) 20 cubits for an entrance.');"><sup>10</sup></span> as there [the entrance was] five [cubits in height] by twenty cubits in width so here also<span class="x" onmousemove="('comment',' In the case of an ENTRANCE TO A BLIND ALLEY.');"><sup>11</sup></span> [the dimensions allowed should be no less<span class="x" onmousemove="('comment',' Cf. supra p. 4, n. 11.');"><sup>12</sup></span>