Narrated 'Ali:
that the Messenger of Allah (ﷺ) said: "If I was going to appoint anyone as a leader without any consultation, I would appoint Ibn Umm 'Abd." (IT)
English reference (IT): Vol. 1, Book 46, Hadith 3809 (IT)
Arabic reference (IT): Book 49, Hadith 4179 (IT)