Reference for Bava Kamma 143:4

השוחט ונמצאת טריפה וכו': א"ל רב חביבי מחוזנאה לרב אשי ש"מ אינה לשחיטה אלא לבסוף

render the animal ritually forbidden for any use,<span class="x" onmousemove="('comment',' Cf. Pes. 22a. ');">⁶</span> so that what follows the beginning would amount to slaughtering an animal no more belonging to the owner?<span class="x" onmousemove="('comment',' For surely after it becomes forbidden for any use, there would be no practical use in retaining ownership. ');">⁷</span>

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