Musnad Ahmad 33:435

Abu Ahmad narrated to us, Sufyan narrated to us, from Abdullah ibn Muhammad ibn Aqil, from Jabir, who said: We were with the Messenger of Allah, peace and blessings of Allah be upon him, at the home of a woman from the Ansar who had prepared food for him. The Prophet, peace and blessings of Allah be upon him, said: "A man from the people of Paradise will enter upon you." Then Abu Bakr entered, so we congratulated him. Then he said: "A man from the people of Paradise will enter upon you." Then Umar entered, so we congratulated him. Then he said: "A man from the people of Paradise will enter upon you." I saw the Prophet, peace and blessings of Allah be upon him, putting his head under the palm branches, saying: "O Allah, if You will, make it Ali." Then Ali entered, so we congratulated him.