Reference for Shabbat 217:5
רבינא איקלע לבי רב אשי חזייה דדריכא ליה חמרא אגבא דכרעיה ויתיב קא צמית ליה בחלא אמר ליה לא סבר לה מר להא דאמר רב הילל חלא לא א"ל גב היד וגב הרגל שאני
is forbidden. Ze'iri's wife made [it] for Hiyya b. Ashi,<span class="x" onmousemove="('comment',' Rashi: roast meat glared. ');"><sup>12</sup></span> but he did not eat it. Said she, 'I have made this for your teacher [Ze'iri] and he ate, yet do you not eat'!-Ze'iri follows his view. For Ze'iri said: One may pour clear wine and clear water through a strainer on the Sabbath, and he need have no fear.<span class="x" onmousemove="('comment',' Of transgression. ');"><sup>13</sup></span> This proves that since it can be drunk as it is,<span class="x" onmousemove="('comment',' Without straining. ');"><sup>14</sup></span>