It was narrated from "Abdullah bin Zalim at-Taimi that Sa"eed bin Zaid bin "Amr bin Nufail said:

I bear witness that ‘Ali is one of the people of Paradise. I said: How is that? He said: He is one of the nine, and if you want me to name the tenth, I shall name him. He said: Hira" shook, and the Messenger of Allah (ﷺ) said: "Be still, Hira", for there is no one on you but a Prophet (ﷺ) or a Siddeeq or a martyr." He said: The Messenger of Allah (ﷺ), Abu Bakr, "Umar, " Ali, "Uthman, Talhah, az-Zubair, ‘Abdur Rahman bin ‘Awf, Sa"d and me - meaning Sa"eed himself