Musnad Abu Ya'la al-Mawsili 112:24

Muhammad ibn Abdullah ibn Numayr narrated to us, Muhammad ibn Bishr narrated to us, al-Hasan ibn Salih narrated to us, from Abu Rabi'ah, from al-Hasan, from Anas, who said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "Paradise longs for three: Ali, Ammar, and Salman."