Reference for Kiddushin 48:13

וצריכא דאי אשמועינן הך קמייתא משום דמעיקרא נהורא בריא והשתא נהורא כחישא אבל הכא דמעיקרא נמי נהורא כחישא אימא לא

the slave does not go out [free] on their account. R'Shaman said to R'Ashi: Are we to assume that sound is nothing?<span class="x" onmousemove="('comment',' Because he was blinded by sound he is not freed.');">²⁵</span> But Rami B'Ezekiel learnt: If a cock stretches its head into the cavity of a glass vessel, crows th and breaks it, he [its owner] must pay for it in full.

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