Ahnaf on Anger: Beware political rage leading to bloodshed

Al-‘Ala’ ibn Jarir reported: Al-Ahnaf ibn Qays, may Allah be pleased with him, said, “It is not appropriate for the leader to be angry, for anger with power is a source of the sword and regret.”

Source: Tārīkh Dimashq 24/346

عن العلاء بن جرير قال الأحنف بن قيس رضي الله عنه لاَ يَنْبَغِي لِلأَمِيْرِ الغَضَبُ لأَنَّ الغَضَبَ فِي القُدْرَةِ لِقَاحُ السَّيْفِ وَالنَّدَامَةِ

24/346 تاريخ دمشق لابن عساكر