Reference for Eruvin 103:3
אמר רמי בר חמא הרי אמרו שבת יש לו ד"א הנותן את עירובו יש לו ד"א או לא
Surely [it may be objected: Does not] R'Nahman [differ from R'Hisda], and it was taught in agreement with him?<span class="x" onmousemove="('comment',' R. Nahman, that R. Judah allowed a rich man to make an 'erub without bread only where he personally attended at the spot, which he desired to acquire as his Sabbath base. Now, since Rabbah b. R. Hanan made his declaration at his own house he should not be entitled to acquire Zinatha as his Sabbath base even according to R. Judah.');"><sup>7</sup></span> - 'I withdraw', the other replied. Rami B'Hama enquired: Behold, it has been laid down that if a man acquired a Sabbath base in person<span class="x" onmousemove="('comment',' Sc. by remaining in that spot at the time the Sabbath began.');"><sup>8</sup></span>