Mu'awiya reported God’s Messenger as saying, “If you are put in a position of authority, Mu'awiya, fear God and act justly.” He said that he kept thinking he would be afflicted by a governorship in accordance with what the Prophet had said till it actually came true.
Ahmad. Baihaqi transmitted Mu‘awiya’s tradition in Dalail an-nubuwa.
Abu Umama reported the Prophet as saying, “No one will rule ten people or more without coming to God who is great and glorious on the day of resurrection with his hand chained to his neck and being set free by his goodness, or brought to destruction by his sin. The beginning of it merits blame, its middle produces regret, and its end is disgrace on the day of resurrection.”
Abu Dharr told that God’s Messenger said to him for six days, “Comprehend, Abu Dharr, what will be said to you afterwards.” Then when the seventh day came he said, “I counsel you to observe fear of God both secretly and openly; when you do wrong do a good deed; do not ask anyone for anything, even if your whip falls;* do not accept a trust; and do not give a decision between two people.”
Ahmad.
* This means that help is to be asked only from God and that one should not ask another human being for even the smallest help.