When 'Umar b. al-Khattab sent out his governors he laid on them the condition that they should not ride a horse not of Arabian breed,* or eat white bread, or wear fine clothing, or shut their gates against the needs of the people, telling them that if they did any of these things punishment would befall them. Then he would accompany them some distance.
Baihaqi transmitted in Shuab al iman.
* Birdhaun. This word is used of a horse of poor breed, a horse not of Arab breed, or more specifically a Turkish horse. It is suggested that the reason for the wording is to warn governors against riding horses, this being a sign of pride. Prohibiting a breed considered second-rate makes it obvious that to ride horses of the best Arab breed would be even a greater sign of pride.
‘Abdallah b. ‘Amr and Abu Huraira reportad God’s Messenger as saying, “When a judge gives a decision having tried his best to decide correctly and is right, he will have a double reward; and when he gives a decision having tried his best to decide correctly and is wrong, he will have a single reward.”
Abush Shammakh al-Azdi was told by a cousin of his on his father’s side who was a companion of the Prophet that he had gone to Mu'awiya, entered his presence and told him he had heard God's Messenger say, "If one who has been given any authority over the people locks his gate against Muslims, or one who has been wronged, or one who has a need, God will lock the gates of His mercy against him when he has a need or is in poverty, however much he is in need of Him.”
