Reference for Eruvin 177:13

אמר רב הונא בר יהודה אמר רב ששת לא להכניס ולהוציא דרך פתחים:

They understood him to imply that the same restriction<span class="x" onmousemove="('comment',' Carrying objects from one domain into the other.');">³¹</span> applies also to a mortar or a tank,<span class="x" onmousemove="('comment',' That was turned upside down and formed an elevation of ten handbreadths.');">³²</span> but Abaye said to them, 'Thus said the Master: R'Meir spoke only of a column and an enclosure of millstones, since their owner assigns for them a permanent Position,<span class="x" onmousemove="('comment',' Lit., 'and a man fixes for them a place'.');">³³</span>

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