Ibn Abbas (may Allah be pleased with them both) said: When Uthman bin Maz'un (may Allah be pleased with him) died, his wife said: Congratulations to you on Paradise. The Prophet (peace and blessings be upon him) looked at her with an angry look and said: "How do you know?" She said: (He was) your (peace and blessings be upon him) horseman and companion. The Messenger of Allah (peace and blessings be upon him) said: "By Allah, I do not know what will be done with me." This statement of his (peace and blessings be upon him) about Uthman weighed very heavily on the Companions of the Messenger of Allah (peace and blessings be upon him), since he was among the best of them. Then when Ruqayyah (may Allah be pleased with her), the daughter of the Messenger of Allah (peace and blessings be upon him), died, he (peace and blessings be upon him) said: "Join our predecessor, Uthman bin Maz'un."
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 8285