Reference for Sanhedrin 105:3

מאי לא מפני שהיא קלה קמיפלגי בפלוגתא דרבי שמעון ורבנן

R. Zera asked of Abaye; Those who are stoned, but in whose case Scripturedoes not explicitly decreestoning,<span class="x" onmousemove="('comment',' For a number of offences such as idolatry, adultery by a betrothed maiden, desecration of the Sabbath, etc., Scripture explicitly ordains stoning. But in the case of others, e.g., witchcraft, incest, incitement to idolatry, etc., Scripture merely decrees death, and by a gezerah shawah we learn that stoning is meant. ');">³</span>

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