It was narrated that "Abdullah bin Zalim al-Mazini said:

When Mu’awiyah left Koofah, he appointed as his governor al-Mugheerah bin Shu"bah. He allowed some speakers to criticise "Ali. I was beside Saeed bin Zaid bin "Amr bin Nufail and he got angry and stood up. He took me by the hand and I followed him, and he said: Don"t you see this man who is wronging himself, who is allowing the people to insult a man who is one of the people of Paradise? I bear witness with regard to the nine that they will be in Paradise, and if I bore witness concerning the tenth I would not be sinning. I said: How is that? He said: The Messenger of Allah (ﷺ) said: "Be still, Hira", for there is no one on you except a Prophet (ﷺ) or a Siddeeq or a martyr." Isaid: Who were they? He said: The Messenger of Allah, Abu Bakr, "Umar, "Uthman, "Ali, az-Zubair, Talhah, ‘Abdur Rahman bin ‘Awf and Sa"d bin Malik. Then he fell silent. I said: And who was the tenth? He said: Me.