The most ignorant a man can be is when he sees that he no longer needs knowledge.

I said to [Al-Ḥasan Al-Baṣrī], “What is the punishment of a scholar?” He replied, “The death of the heart.” I asked, “And what is the death of the heart?” He said, “Seeking the worldly life (Ad-Dunyā) with deeds of the Hereafter.”

You will first be defeated at jihad with your hands, then jihad with your tongues, then jihad with your hearts. Any heart that does not recognize good nor denounce evil will be turned upside down.