Reference for Sanhedrin 179:12
וזוממי בת כהן: מנהני מילי אמר רב אחא בריה דרב איקא דתניא ר' יוסי אומר מה ת"ל (דברים יט, יט) ועשיתם לו כאשר זמם לעשות לאחיו לפי שכל המזוממין שבתורה זוממיהן ובועליהן כיוצא בהן
It has been taught: R. Jose the Galilean said: The Torah understood the extreme depths [of depravity inherent in] idolatry,<span class="x" onmousemove="('comment',' Or, the wiles by which idolatry attracts. ');"><sup>19</sup></span> therefore the Torah gave him [the false prophet] power therein, that should he even cause the sun to stand still in the middle of the heavens, thou must not hearken to him.<span class="x" onmousemove="('comment',' Since Scripture says, and giveth thee a sign or a wonder, it follows that the false prophet must have been endowed with such powers. ');"><sup>20</sup></span>