Swyd bin Sa'id سويد بن سعيد · The Chapters on Jihad

“When ‘Abdullah bin ‘Amr bin Haram was killed, on the Day of Uhud, the Messenger of Allah (ﷺ) said: ‘O Jabir, shall I not tell you what Allah said to your father?’ I said: ‘Yes.’ He said: ‘Allah does not speak to anyone except from behind a screen, but He spoke to your father face to face and said: “O My slave, ask Me and I shall give you.” He said: “O my Lord, bring me back to life so…

“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.”