Reference for Bava Batra 184:1

אי דליכא לאישתלומי מיניה ליעכב תורא בזוזיה דאמרי אינשי מן מרי רשותיך פארי אפרע

If there is no [capital] from which [the buyer] may be reimbursed, let the ox be retained for the money;<span class="x" onmousemove="('comment',' Why, then, should the ox, according to Rab who considers the sale invalid, be returned to the seller? ');">¹</span> as people say.<span class="x" onmousemove="('comment',' Cf. B.K. 46b; B.M. 118a. ');">²</span>

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