Reference for Eruvin 102:14

רבה בר רב חנן הוה רגיל דאתי מארטיבנא לפומבדיתא

They,<span class="x" onmousemove="('comment',' The townspeople who remained at home and who were presumably in the possession of the prescribed quantity of food for an 'erub .');">⁴⁸</span> however, have the status of rich men.<span class="x" onmousemove="('comment',' Who are able to provide the required quantity of bread and who cannot, therefore, acquire a Sabbath base except by proceeding to the spot in person or by sending thither the prescribed quantity of food.');">⁴⁹</span> Thus it is perfectly dear that only a poor man but not a rich man is allowed to prepare an 'erub by the declaration, 'Let my Sabbath base be at such and such a place'. This is conclusive. R'Hiyya B'Ashi taught Hiyya B'Rab in the presence of Rab [that the law<span class="x" onmousemove="('comment',' That an 'erub may be effected by proceeding in person to the spot one desired to acquire as a Sabbath base.');">⁵⁰</span> applied] to both poor and rich. Said Rab to him: Conclude this also with the Statement, 'The halachah is in agreement with R'Judah'. Rabbah B'R'Hanan was in the habit of going<span class="x" onmousemove="('comment',' On the Sabbath.');">⁵¹</span> from Artibana to Pumbeditha<span class="x" onmousemove="('comment',' Towns that were just two Sabbath limits distant from one another and that could in consequence be combined by an 'erub on the boundary line between the two limits.');">⁵²</span>

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