Intellectual deficiency caused by greed
Nahj al-Balāgha|Volume 1|Book 3|Chapter 219
٢١٩. وَقَالَ (عليه السلام): أَكْثَرُ مَصَارِعِ الْعُقُولِ تَحْتَ بُرُوقِ الْمَطَامِعِ.
219. Amīr al-mu’minīn, peace be upon him, said: Most of the deficiency of intelligence occurs due to the flash of greed. [1]