Musannaf Ibn Abi Shayba 27:705

Abu Usama narrated to us, from Hisham, from al-Hasan, who said: The Messenger of Allah (may Allah bless him and grant him peace) said: "There shall enter Paradise, through the intercession of a man from my nation, [a number of people] like [the tribes of] Rabi'ah and Mudar." He said: Hawshab narrated to me, and he said: So we said to al-Hasan, "Did he name him for you?" He said, "Yes, Uways al-Qarani."