Reference for Chullin 243:14

כי קאמר ר"ע ה"מ פלטתו סכין אבל פלטתו חיה לא בטיל קמ"ל טעמא דר"ע מפני שהעור מבטלן ל"ש פלט חיה ול"ש פלט סכין

- You must therefore say that even where the knife cut it away it is not rendered negligible according to R'Ishmael; and R'Huna<span class="x" onmousemove="('comment',' I.e., the second dictum of R. Huna ('If there were two pieces of flesh' etc.) accords with R. Akiba; the first dictum of R. Huna which interprets the view of R Judah in our Mishnah ('Provided he collected it together') accords with R. Ishmael.');">⁸</span>

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