Reference for Eruvin 64:8
אמר רבא ל"ש אלא באילן העומד חוץ לעיבורה של עיר אבל אילן העומד בתוך עיבורה של עיר אפילו למעלה מעשרה הרי זה עירוב דמתא כמאן דמליא דמיא
<span class="x" onmousemove="('comment',' [I.e., have you included this as a fixed element in the Talmud? This is one of the few passages which throw light on the first stages of the redaction of the Talmud, v. J.E. XII, p. 15.]');"><sup>19</sup></span> - 'Yes', he answered them - So it was also stated:<span class="x" onmousemove="('comment',' [A confirmatory amoraic tradition that this explanation has been included as a fixed element in the Talmud.]');"><sup>20</sup></span> R'Nahman reporting Samuel said: Here we are dealing with a tree that stood in a public domain, that was ten handbreadths high and four handbreadths wide, and the man had the intention to acquire his Sabbath abode below. This, furthermore, is the view of Rabbi who land down: Any act that is forbidden by a Rabbinical measure<span class="x" onmousemove="('comment',' Shebuth.');"><sup>15</sup></span>