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." (AR)
English reference (AR): Vol. 1, Book 46, Hadith 3809 (AR)
Arabic reference (AR): Book 49, Hadith 4179 (AR)