Reference for Chullin 75:13

אי ממתני' הוה אמינא

Is there not here a contrad in regard to lowing and also in regard to excreting? - In regard to lowing there is no contradiction because in the one case<span class="x" onmousemove="('comment',' The statement by Rab. Lowing loudly or excreting vigorously is according to Rab a sufficient sign of vitality.');">³</span>

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