Musnad Abu Ya'la al-Mawsili 160:69

Ahmad ibn al-Miqdam narrated to us, Abdullah ibn Ja'far al-Madini narrated to us—and he was better than his father, if Allah wills—al-'Ala' narrated to us, from his father, from Abu Hurayrah, who said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "I saw Ja'far ibn Abi Talib as an angel flying with the angels, with two wings, in Paradise."