Reference for Chullin 82:38

אמר ר' אושעיא

I declare it to be my sin-offering'? - R'Abbahu answered: We must suppose that he said: 'I declare it to be my sin-offering'.<span class="x" onmousemove="('comment',' In that case only is the slaughtering invalid; but where he did not use this formula or where it was known that he was not obliged to bring a sin-offering, his words are meaningless and the slaughtering is valid.');">¹⁵</span>

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