BT Meg 3a(28) :ואמאי שנא אד{{}}^א^וריתא דלא מזדעזעא ארעא, אדנביאי אזדעזעא‏ : what is the difference between the Torah for which (the earth) did not shake (because of the translation) and the prophets for which it did
See the entire entry for zwˁ vb. to move; to tremor