Reference for Sanhedrin 105:5

א"ל בדמיהם דמיהם בם גמרי דאי במות יומתו גמרי דמיהם דמיהם למה לי

from which phrase do we deduceit: from 'they shall surely be put to death', or from 'their blood shallbe upon them'?<span class="x" onmousemove="('comment',' Lev. XX, 27 A man also or a woman that hath a familiar spirit (necromancer), or that is a wizard, they shall surely be put to death: they shall stone them with stones: their blood shall be upon them. In the case of all other malefactors who are stoned, though stoning is not explicitly stated, the two phrases 'they' shall surely be put to death' and 'their blood shall be upon their head' occur. ');">⁵</span>

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