Reference for Eruvin 187:1

זה מטלטל עד עיקר מחיצה וזה מטלטל עד עיקר מחיצה

The tenants on either side<span class="x" onmousemove="('comment',' Lit., 'this . . and this'.');">¹</span> may move their objects<span class="x" onmousemove="('comment',' Even such as were in the houses when the Sabbath began.');">²</span>

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