It wasnarrated from Umm Husain that she heard the Messenger of Allah(ﷺ)say:
"Even if the one appointed over you is a mutilatedEthiopianslave whose nose and ears have been cut off, listen to himand obey,so long as he leads you according to the Book of Allah." (FR)
English reference (FR): Vol. 4, Book 24, Hadith 2861 (FR)
Arabic reference (FR): Book 24, Hadith 2971 (FR)