Reference for Bava Kamma 171:5

אמרי הכא במאי עסקינן כגון שסכו נשא דלא הדר

that he who makes his father deaf is subject to be executed,<span class="x" onmousemove="('comment',' For having committed a capital offence in accordance with Ex. XXI, 25. ');">⁵</span>

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