Reference for Shabbat 268:13

הוו בה במערבא הרחצת כל גופו או הרחצת מילה

R. Joseph demurred: And do you not admit a distinction between hot water heated on the Sabbath and hot water heated on the eve of the Sabbath?<span class="x" onmousemove="('comment',' Rab refers to the latter, while R. Joseph assumed that the Mishnah refers to the former. ');">¹¹</span>

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