Nahj al-Balāgha
Hadith 2174٢٨٨. وَقَالَ (عليه السلام): إِذَا أَرْذَلَ اللهُ عَبْداً حَظَرَعَلَيْهِ الْعِلْمَ.
288. Amīr al-mu’minīn, peace be upon him, said: When Allāh intends to humiliate a person He denies him knowledge.