It wasnarrated from Anas bin Malik that the Messenger of Allah (ﷺ)said:
"Listen and obey, even if the one appointed over you is anEthiopian slave with a head like a raisin." (JA)
English reference (JA): Vol. 4, Book 24, Hadith 2860 (JA)
Arabic reference (JA): Book 24, Hadith 2970 (JA)