Reference for Bava Batra 197:5
מתקיף לה רב הונא בריה דרב יהושע ודלמא ביתא מעילאי רווח מתקיף לה רב פפא ודלמא מיכף הוו כייפי ידייהו מתקיף לה רב אשי ודלמא שלחופי הוו משלחפי
R. Aha b. Jacob demurred: They might have been standing diagonally.<span class="x" onmousemove="('comment',' The distance between the diagonally opposite corners of the Holy of Holies was, of course, greater than that between any two of its sides; consequently longer than twenty cubits. This would allow room both for the wings and the bodies of the Cherubim. ');"><sup>12</sup></span> R. Huna the son of R. Joshua demurred: The house might have been wider from above!<span class="x" onmousemove="('comment',' And, therefore, there was a distance of more than twenty cubits between the walls, allowing room for the wings as well as for the bodies of the Cherubim. ');"><sup>13</sup></span> R. Papa demurred: Might not their wings have been bent?<span class="x" onmousemove="('comment',' So that together with the bodies, no more than a length of twenty cubits was required. ');"><sup>14</sup></span>