Reference for Bava Batra 84:2
רמי ליה רבי אבא לרב יהודה במערתא דבי רב זכאי מי אמר שמואל שותף יש לו חזקה והאמר שמואל שותף כיורד ברשות דמי לאו למימרא דשותף אין לו חזקה לא קשיא הא דנחית לכולה הא דנחית לפלגא
Samuel, however, learnt that a craftsman has no <i>hazakah</i>, but a partner has.<span class="x" onmousemove="('comment',' Because the fact that he has been left in undisturbed possession of the whole of the joint property constitutes a presumption that the other partner has made over to him his share. ');"><sup>3</sup></span> Samuel in this is consistent. For Samuel has said that partners have <i>hazakah</i> as against each other and can give evidence in one another's favour<span class="x" onmousemove="('comment',' Not being regarded as interested parties even where the matter in dispute is a part of the joint property. ');"><sup>4</sup></span>