Reference for Bava Kamma 133:6
שאני שאיבה דמדרבנן היא אי הכי אפילו דרישא נמי התם איכא תורת כלי עליו בתלוש הכא אין תורת כלי עליו בתלוש
But if you maintain that a change in name has a legal effect, why then, even where he fixed it first and subsequently hollowed it out, should it not disqualify the mikweh!<span class="x" onmousemove="('comment',' As by hollowing out the material which was originally called plank the name was changed into trough, and it should thus become a receptacle in the eye of the law. [Although this change was effected after it had been fixed to the soil, the fact that it goes by the name of a trough should in itself be sufficient to disqualify it for the use of the Mikweh; v. Asheri and Shittah Mekubezeth, a.l.] ');"><sup>11</sup></span> — The law regarding disqualification through drawn water<span class="x" onmousemove="('comment',' In receptacles poured into a mikweh. ');"><sup>12</sup></span>