Reference for Eruvin 38:28
איכא דאמרי גודריתא דקני קא מיבעיא ליה גודריתא דקני מאי א"ל תניתוה היה שם גדר או אילן או חיצת הקנים נידון משום דיומד מאי לאו גודריתא דקני
is of the opinion that two imaginary acts may also be assumed [to have been effected].<span class="x" onmousemove="('comment',' The mound under discussion being circular in shape has the same status as a round stone and its admissibility as a corner-piece depends, therefore, on the respective opinions of R. Simeon and R. Ishmael.');"><sup>59</sup></span> Abaye enquired of Rabbah: Is a fence of reeds<span class="x" onmousemove="('comment',' Growing on the two sides of the corner of a well enclosure.');"><sup>60</sup></span> [in which the distance between] any two reeds was less than three handbreadths regarded as a valid corner-piece or not? - The other replied: You have learnt this: If there was present a tree or a wall or a fence of [growing] reeds it may be treated as a corner-piece.<span class="x" onmousemove="('comment',' Supra 15a q.v. notes.');"><sup>61</sup></span>