Reference for Bava Kamma 81:18

אין לי אלא באכילה בהנאה מנין ת"ל (שמות כא, כח) ובעל השור נקי

— R. Shimi therefore said: [The case is one] where for instance it killed three heathens.<span class="x" onmousemove="('comment',' In which case the ox should not be put to death. ');">¹⁵</span>

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