Musannaf Ibn Abi Shayba 27:563

Ubayd Allah narrated to us, he said: Isra'il informed us, from Abu Ishaq, from Hubayrah ibn Yarim, from Hani', from Ali, he said: The Messenger of Allah (peace and blessings of Allah be upon him) said to Ja'far: "You resemble my physical appearance and my character."