Reference for Bava Kamma 53:18

היכי דמי אילימא באתרא דכדא לא קרו חבית וחבית לא קרו כדא הא לא קרו לה

And we have likewise learnt also elsewhere:<span class="x" onmousemove="('comment',' Infra p. 169. ');">²⁶</span> If one man comes with his [habith] barrel and another comes with his beam and [it so happened that] the [kad] pitcher of this one breaks by [collision with] the beam of that one, he is exempt.<span class="x" onmousemove="('comment',' Infra p. 169. ');">²⁶</span>

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