Hadith 904
Sayyiduna Abdullah bin Akim (may Allah be pleased with him) narrates that the Messenger of Allah (peace and blessings be upon him) said: "On the night of Isra, Allah the Exalted revealed to me three things regarding Ali (may Allah be pleased with him): (1) He is the leader of all the believers, (2) He is the Imam of the God-fearing, (3) And he will be the leader of the people with white hands, feet, and faces."