Reference for Shabbat 78:3
אימא סיפא בי"ט כחמין שהוחמו בי"ט ואסורין ברחיצה ומותרין בשתיה לימא תנן סתמא כבית שמאי דתנן בית שמאי אומרים לא יחם אדם חמין לרגליו אא"כ ראויין לשתיה וב"ה מתירין
IT ONCE HAPPENED THAT THE PEOPLE OF TIBERIAS DID THIS: [etc.] which washing [is meant]? Shall we say, of the whole body; is only hot water heated on the Sabbath forbidden, whereas hot water heated on the eve of the Sabbath is permitted? Surely it was taught: As to hot water which was heated on the eve of the Sabbath, on the morrow [Sabbath day] one may wash his face, hands, and feet in it, but not his whole body. Hence [it must refer to] his face, hands, and feet. Then consider the second clause: IF ON A FESTIVAL, IT IS LIKE WATER HEATED ON A FESTIVAL, WHICH IS FORBIDDEN FOR WASHING BUT PERMITTED FOR DRINKING. Shall we say that we learnt an anonymous [Mishnah] in accordance with Beth Shammai? For we learnt, Beth Shammai maintain: A man must not heat water for [washing his] feet, unless it is fit for drinking; but Beth Hillel permit it!<span class="x" onmousemove="('comment',' The reference is to Festivals.-Thus our Mishnah would appear to agree with Beth Shammai, whereas it is a principle throughout the Talmud that Beth Hillel's view is always halachah, and no anonymous Mishnah is taught according to the former. ');"><sup>5</sup></span> — Said R. Ika b. Hanina: The reference is to the sousing<span class="x" onmousemove="('comment',' Not washing-sousing is more lenient. ');"><sup>6</sup></span>