Reference for Eruvin 41:11

א"ל רב חסדא למרי בריה דרב הונא בריה דרב ירמיה בר אבא אמרי אתיתו מברנש לבי כנישתא דדניאל דהוה תלתא פרסי בשבתא אמאי סמכיתו אבורגנין הא אמר אבוה דאבוה משמיה דרב אין בורגנין בבבל

But did not the father of your father lay down in the name of Rab [that the law of] isolated huts is not [applicable] to Babylon? - The other, thereupon, went out [with him and] showed him certain [ruined] settlements that were contained within the radius of seventy cubits and a fraction<span class="x" onmousemove="('comment',' Lit., 'and remnants', Sc. two thirds of a cubit (cf. infra 57a) . Ruins in the neighbourhood of a town within the limit mentioned are regarded as an extension of the town (cf. infra 55b) .');">¹⁹</span> [from the town]. R'Hisda stated: Mari B'Mar made the following exposition: It is written,<span class="x" onmousemove="('comment',' Lit., 'what (is the significance of that) which is written'.');">²⁰</span>

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