Al-An'am · 6:112

112. Just as I tested you with the hostility of these idolaters towards you, I tested every prophet before you. I made for each of them enemies of rebellious men and jinn, who used to whisper evil in the hearts of one another, beautifying falsehood in order to deceive them. If I willed them not to do so, they would not have done that; but I willed it as a test for them. So leave them to their fabrications of disbelief and falsehood, and pay no attention to them.