Reference for Chullin 59:28

מנין לשחיטה שהיא מפורעת

[I reply that] we have learnt:<span class="x" onmousemove="('comment',' This teaching is not found in any Mishnah but it might be inferred from the Mishnah, infra, 117b. V. Tosaf s.v. .');">²⁰</span>

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