Nahj al-Balāgha

Hadith 1681
contentment
٥٧. وَقَالَ (عليه ‏السلام): الْقَنَاعَةُ مَالٌ لَا يَنْفَدُ.
57. Amīr al-mu’minīn, peace be upon him, said: Contentment is wealth that does not diminish. [1]
Source: al-Sharīf al-Raḍī