Sunan Ibn Majah — The Chapters on Jihad

“Listen and obey, even if the one appointed over you is an Ethiopian slave with a head like a raisin.”

“Even if the one appointed over you is a mutilated Ethiopian slave whose nose and ears have been cut off, listen to him and obey, so long as he leads you according to the Book of Allah.”

“Whenever Anas bin Malik finished narrating a Hadith from the Messenger of Allah (ﷺ), he would say, ‘Or as the Messenger of Allah (ﷺ) said.'”