Surah Al-Baqarah: 26

Translation: Yes, Allah is not ashamed to give parables of a mosquito or something worse than that. It has come from Him, and those who do not believe listen to them and say, "What does Allah have to do with such parables?" In this way, Allah causes many to go astray with a single word, and guides many to the right path, and it is He who causes to go astray those who are transgressors.