Reference for Bava Metzia 64:18

מי סברת אשונא דקרא קאי אשונא דמתניתין קאי

— As a rule, one goes after his ass.<span class="x" onmousemove="('comment',' Therefore, seeing that the first clause refers to an ass belonging to a heathen, the driver too is a heathen — probably the owner; and the same holds good of the second clause. ');">¹⁶</span>

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