The obligation of obeying leaders in matters that do not involve sin, but it is forbidden to obey them in sinful matters Sahih Muslim 1838 c
Arabic hadith text
وَحَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ، حَدَّثَنَا وَكِيعُ بْنُ الْجَرَّاحِ، عَنْ شُعْبَةَ، بِهَذَا الإِسْنَادِ وَقَالَ عَبْدًا حَبَشِيًّا مُجَدَّعًا .
Translation
In other versions of the above tradition, the wordings are" an Abyssinian slave." and" a maimed Abyssinian slave".