Reference for Bava Batra 85:7
שאני ס"ת דלשמיעה קאי
And suppose he does obtain from him a formal transfer, what does it matter? The other can still keep it safe for his own creditor,<span class="x" onmousemove="('comment',' If A has borrowed money from C on the security of his share in a field and then makes over his share to his partner B, it is to his interest that the field should be recognised as belonging to B rather than to any other person, so that C may seize the mortgaged part of the field in consideration of the debt and A will thus be saved from becoming a defaulter. Hence if B's title to the field is contested, A is an interested party and cannot give evidence in B's favour, although he has himself formally renounced all share in the field. ');"><sup>7</sup></span>