Reference for Eruvin 194:8

אמר ריש לקיש משום לוי סבא הכא במאי עסקינן במערן מחבית לחבית ורבי יהודה לטעמיה דאמר מים אין בהם ממש

of THIS<span class="x" onmousemove="('comment',' Presumably the JAR.');">²¹</span> MUST NOT MOVE? - That<span class="x" onmousemove="('comment',' I.e., the water.');">²²</span> which is within THIS MUST NOT BE MOVED FURTHER THAN THE FEET OF ITS OWNER'Might it not be suggested that R'Judah was heard to hold his view<span class="x" onmousemove="('comment',' That water is deemed to have no substance.');">²³</span> only where it<span class="x" onmousemove="('comment',' I.e., the water.');">²²</span>

Jastrow