Sahih al-Bukhari 7142

Arabic

حَدَّثَنَا مُسَدَّدٌ، حَدَّثَنَا يَحْيَى، عَنْ شُعْبَةَ، عَنْ أَبِي التَّيَّاحِ، عَنْ أَنَسِ بْنِ مَالِكٍ ـ رضى الله عنه ـ قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏ "‏ اسْمَعُوا وَأَطِيعُوا وَإِنِ اسْتُعْمِلَ عَلَيْكُمْ عَبْدٌ حَبَشِيٌّ كَأَنَّ رَأْسَهُ زَبِيبَةٌ ‏"‏‏.‏

English translation

Narrated Anas bin Malik:Allah's Messenger (ﷺ) said, "You should listen to and obey, your ruler even if he was an Ethiopian (black) slave whose head looks like a raisin

Reference: Sahih al-Bukhari 7142, Book of Judgments (Ahkaam). English translation by Dr. Muhammad Muhsin Khan.