Reference for Shabbat 225:3
<big><strong>גמ׳</strong></big> חבל דמאי אי לימא חבל דעלמא רבי יהודה מתיר קשר של קיימא הוא אלא חבל דגרדי למימרא דרבנן סברי גזרינן חבל דגרדי אטו חבל דעלמא ורבי יהודה סבר לא גזרינן
BUT R. JUDAH PERMITS IT. R. JUDAH STATED A GENERAL RULE: ANY KNOT THAT IS NOT PERMANENT ENTAILS NO CULPABILITY. <b><i>GEMARA</i></b>. What CORD is meant. Shall we say an ordinary [bucket] cord? [How then state] R. JUDAH PERMITS IT? — [Surely] it is a permanent knot? Rather it refers to a weaver's rope.<span class="x" onmousemove="('comment',' He needs this and will not abandon it there. ');"><sup>6</sup></span> Shall we say that the Rabbis hold, We preventively forbid a weaver's cord on account of an ordinary one,<span class="x" onmousemove="('comment',' The former ought to be permitted, since the knot is only temporary (v. preceding note), and the only reason for prohibiting it is that we fear that otherwise one may fasten an ordinary rope too. ');"><sup>7</sup></span>