Reference for Shabbat 309:3

אמר רב פפא הכא בכלכלה דחוקה עסקינן דבהדי דשקיל ליה לעירוב קמניד ליה לאילן וקמשמש באילן גופיה והלכתא צדדין אסורין צדי צדדין מותרין

below ten handbreadths, his 'erub is an 'erub. Thus it is only because he fixed a peg in the tree, but if he did not, even if it is below ten handbreadths his 'erub is not an 'erub.<span class="x" onmousemove="('comment',' I.e., if he merely tied the basket to the tree. The 'erub is invalid because in order to get at it he must make use of the side of the tree; where it is hanging on a peg, however, he only makes indirect use of the sides. ');">³</span>

Jastrow

Jastrow

Jastrow

Jastrow

Jastrow

Jastrow

Jastrow

Jastrow

Jastrow

Jastrow

Jastrow

Jastrow

Jastrow

Jastrow

Jastrow