٢١٢. وَقَالَ (عليه السلام): عُجْبُ الْمَرْءِ بِنَفْسِهِ أَحَدُ حُسَّادِ عَقْلِهِ.
212. Amīr al-mu’minīn, peace be upon him, said: A man’s vanity for himself is one of the enemies of his intelligence. [1]
Vanity as an enemy of intelligence
Nahj al-Balāgha|Volume 1|Book 3|Chapter 212