Reference for Eruvin 65:3

כשרבים מכתפין עליו וכדעולא דאמר עולא עמוד תשעה ברשות הרבים ורבים מכתפין עליו וזרק ונח על גביו חייב:

on it,<span class="x" onmousemove="('comment',' The branch that was beyond the four cubits was lower than ten handbreadths; which, in consequence, assumes the status of a public domain. It is impossible, therefore, to carry the 'erub from the upright portion of the branch which is a private domain to the root of the tree which is also a private domain, since the only way possible, viz. the horizontal portion of the branch, constitutes a public domain of all the space above it, and it is forbidden to carry from one private into another private domain via a public domain (cf. Shab. 96a) .');">⁸</span> and [this ruling<span class="x" onmousemove="('comment',' That the branch has the status of a public domain.');">⁹</span> is] in agreement with that of Ulla who laid down: If a column, nine handbreadths high,<span class="x" onmousemove="('comment',' Only of that height; for if it was lower than three handbreadths it is regarded as a mere projection and as a part of the ground; from three to nine handbreadths in height, since it is too low for adjusting burdens, it is not deemed a public domain but it has the status of a karmelith (v. Glos.) ; and one of ten handbreadths in height is deemed to be a private domain.');">¹⁰</span> was situated in a public domain and many people were adjusting their burdens on it, any man who throws<span class="x" onmousemove="('comment',' Across a distance of four cubits from the column');">¹¹</span>

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