Umm Ala reported,

She said, "Uthman bin Mazun fell to our lot for lodging when the Ansar drew lots for housing the Muhajirun. He fell ill, and we nursed him until he died. Then we wrapped him in his garments, and the Messenger of Allah ﷺ came in upon us."I said, "May Allah have mercy on you, Abu Saaib. My testimony concerning you is that Allah has honored you."He said, "How do you know that?"I said, "I do not know, by Allah."He said, "As for him, certainty has come to him. Indeed, I hope for good for him from Allah. By Allah, though I am the Messenger of Allah, I do not know what will be done with me or with you."Umm Ala said, "By Allah, I will never declare anyone pure after him."She said, "And I saw in a dream a flowing spring for Uthman, so I came to the Messenger of Allah ﷺ and mentioned that to him."He said, "That is his deeds flowing on for him."

عن أم العلاء- وهي امرأة من نسائهم بايعت رسول الله ﷺ

- قالت: طار لنا عثمان بن مطعون في السكنى، حين اقترعت الأنصار على سكنى المهاجرين، فاشتكى فمرضناه حتى توفي، ثم جعلناه في أثوابه، فدخل علينا رسول الله ﷺ فقلت: رحمة الله عليك أبا السائب، فشهادتي عليك لقد أكرمك الله، قال: وما يدريك؟ قلت: لا أدري والله قال: أما هو فقد جاءه اليقين، إني لأرجو له الخير من الله، والله ما أدري وأنا رسول الله ما يفعل بي ولا بكم. قالت أم العلاء: فوالله لا أزكي أحدا بعده. قالت: ورأيت لعثمان في النوم عينا تجري فجئت رسول الله ﷺ فذكرت ذلك له. فقال: ذاك عمله يجري له.