"I was with Abu Bakrah under the Minbar of Ibn 'Amir while he was giving a Khutbah wearing a fine garment. Abu Bilal said: 'Look at our Amir wearing clothes of wickedness!' So Abu Bakrah said: Be quiet! I heard the Messenger of Allah ﷺ saying: "Whoever insults Allah's Sultan on the earth, Allah disgraces him."  

أَبُو بِلاَلٍ انْظُرُوا إِلَى أَمِيرِنَا يَلْبَسُ ثِيَابَ الْفُسَّاقِ فَقَالَ أَبُو بَكْرَةَ اسْكُتْ سَمِعْتُ رَسُولَ اللَّهِ ﷺ يَقُولُ مَنْ أَهَانَ سُلْطَانَ اللَّهِ فِي الأَرْضِ أَهَانَهُ اللَّهُ