כה לעולם דאזקיה תורא דמשאיל לתורא דשואל והכא במאי עסקינן שקבל עליו שמירת גופו
25 This would be in conformity with Samuel,<span class="x" onmousemove="('comment',' Who maintains, supra pp. 9-11, that Mab'eh in the Mishnaic text denotes Tooth, and Ox signifies Foot, whereas Horn has not been dealt with explicitly. ');"><sup>19</sup></span> but according to Rab, who affirmed that ox in the Mishnaic text was intended to include all kinds of damage done by ox,<span class="x" onmousemove="('comment',' Supra p. 10; so that Horn has already been dealt with in the first Mishnah. ');"><sup>20</sup></span> what was meant to be introduced by the clause, THE OFFENDER IS LIABLE? — To introduce that which our Rabbis have taught: WHENEVER DAMAGE HAS OCCURRED THE OFFENDER IS LIABLE introduces liability in the case of a paid bailee and a borrower, an unpaid bailee and a hirer, where the animal in their charge did damage, <i>Tam</i> paying half-damages and <i>Mu'ad</i> paying full damages. If, however, a wall<span class="x" onmousemove="('comment',' Of a sound structure, cf. infra 55b-56a ');"><sup>21</sup></span> broke open at night, or robbers took it by force and it went out and did damage, there is exemption. The Master said: 'WHENEVER DAMAGE HAS OCCURRED, THE OFFENDER IS LIABLE introduces liability in the case of an unpaid bailee and a borrower, a paid bailee and a hirer'. Under what circumstances? If the ox of the lender damaged the ox of the borrower, why should not the former say to the latter: 'If my ox had damaged somebody else's, you would surely have had to compensate;<span class="x" onmousemove="('comment',' The borrower being responsible for the damage done by the ox whilst under his charge. V. infra 44b ');"><sup>22</sup></span> now that my ox has damaged your own ox, how can you claim compensation from me?' Again, if the ox of the borrower damaged the ox of the lender, why should not the latter say to the former: 'If my ox had been damaged by somebody else's, you would surely have had to compensate me for the full value of the ox,<span class="x" onmousemove="('comment',' As laid down in Ex. XXII. 13. ');"><sup>23</sup></span> now that the damage resulted from your ox, how can you offer me half damages?<span class="x" onmousemove="('comment',' I.e., in the case of the borrower's ox having been Tam. ');"><sup>24</sup></span> — It must therefore still be that the ox of the lender damaged the ox of the borrower, but we deal with a case where he [the borrower] has taken upon himself responsibility for the safety of the ox