Sunan Ibn Majah, Chapter: The Chapters on Ascetism (Zuhd)

that the Messenger of Allah (saw) said: "A Prophet will come accompanied by two men, and a Prophet will come accompanied by three, and (some will come) with more or less than that. It will be said to him: Did you convey the message to your people? And he will say: Yes. Then his people will be called and it will be said: Did he convey the message to you? They will say: No. Then it will be said: Who will bear witness for you? He will say: Muhammad and his nation. So the nation of Muhammad will be called and it will be said: Did this man convey the message? They will say: Yes. He will say: How did you know that? They will say: Our Prophet told us that the Messengers had conveyed the message, and we believed him. This is what Allah says: "Thus We have made you, a just (and the best) nation, that you be witnesses over mankind and the Messenger (Muhammad (saw)) be a witness over you." [2:143]