Nahj al-Balāgha
Hadith 1804٢٢٢. وَقَالَ (عليه السلام): مِنْ أَشْرَفِ أَفْعَالِ الْكَرِيمِ غَفْلَتُهُ عَمَّا يَعْلَمُ.
222. Amīr al-mu’minīn, peace be upon him, said: The highest act of a noble person is to ignore what he knows.