Reference for Meilah 37:20

אמר ליה רב כהנא לרב זביד

And the Divine Law compared it to the law of idolatry: Just as the latter [applies] only when a change has taken place,<span class="x" onmousemove="('comment',' The worshipper transfers his allegiance from God to the idol (Rashi) .');">¹²</span>

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