Reference for Bava Kamma 112:4
מסרה לרועה נכנס הרועה כו': אמרי תחתיו דמאן אילימא תחתיו דבעל בהמה תנינא חדא זמנא מסרו לשומר חנם ולשואל לנושא שכר ולשוכר כולן נכנסו תחת הבעלים אלא תחתיו דשומר
'Placed', [you say]? Is this not obvious? — The ruling was necessary to meet the case where he merely stood in front of it [blocking thus any other way for it while leaving open that leading to the corn]. Said Abaye to R. Joseph: Did you not explain to us that [the ruling of Rab referred to a case where] the animal was [not actually placed but only] beaten [with a stick and thus driven to the corn]? In the case of robbers also, [the ruling in the Mishnah similarly refers to a case where] they had only beaten it. IF HE HANDED THEM OVER TO THE CARE OF A SHEPHERD, THE SHEPHERD WOULD ENTER INTO ALL THE RESPONSIBILITIES INSTEAD OF HIM. I would here ask: 'Instead of whom?' If you say, instead of the owner of the animal, have we not already learnt elsewhere: 'If an owner hands over his cattle to an unpaid bailee or to a borrower, to a paid bailee or to a hirer, each of them would enter into the responsibilities of the owner'?<span class="x" onmousemove="('comment',' Supra 44b. ');"><sup>4</sup></span>