אִם־יִשֹּׁ֥ךְ הַנָּחָ֖שׁ בְּלוֹא־לָ֑חַשׁ וְאֵ֣ין יִתְר֔וֹן לְבַ֖עַל הַלָּשֽׁוֹן׃
Se il serpente morde prima di essere incantato, allora l'incantatore non ha alcun vantaggio.
Zohar
For one time, Rabbi Elazar was walking on a path, and Rabbi Chizkiya was walking with him. They saw a snake and Rabbi Chizkiya got up to kill it. Rabbi Elazar said to him, "Leave it, don't kill it." [Rabbi Chizkiya] responded, "But it's a bad thing, for it kills people." [Rabbi Elazar] said to Rabbi Chizkiya, "But it says in the verse (Koheles 10:11) 'If a snake will kill without a whisper'. A snake does not bite a person until he is whispered to from Above to kill the person...