Kharija bin Zayd bin Thabit reported,

Umm Ala, a woman from among them who had pledged allegiance to the Prophet ﷺ, reported that when the Ansar drew lots to determine which of the Muhajirun would lodge with them, Uthman bin Mazun fell to their share.Umm Ala said, "Uthman bin Mazun stayed with us. He fell ill, so we nursed him until he died, and we wrapped him in his garments. Then the Messenger of Allah ﷺ came in to us, and I said, 'May Allah's mercy be upon you, Abu Saaib. I bear witness for you that Allah has honored you.'"The Prophet ﷺ said to me, "And how do you know that Allah has honored him?"I replied, "I do not know, may my father and mother be your ransom, Messenger of Allah."The Messenger of Allah ﷺ said, "As for Uthman, by Allah, the certainty has come to him, and I do hope good for him. By Allah, even though I am the Messenger of Allah, I do not know what will be done with him."She said, "By Allah, I will never declare anyone pure after this," and it grieved me.She continued, "Then I slept and saw in a dream a flowing spring for Uthman. I came to the Messenger of Allah ﷺ and informed him, and he said, 'That is his deeds. As for him, the certainty has come to him, and by Allah, I do hope good for him. By Allah, even though I am the Messenger of Allah ﷺ, I do not know what will be done with me.'"She said, "By Allah, I will never declare anyone pure after this."

عن خارجة بن زيد الأنصاري

أن أم العلاء امرأة من نسائهم قد بايعت النبي ﷺ- أخبرته أن عثمان بن مطعون طار له سهمه في السكنى حين أقرعت الأنصار سكنى المهاجرين، قالت أم العلاء: فسكن عندنا عثمان بن مطعون فاشتكى، فمرضناه حتى إذا توفي وجعلناه في ثيابه دخل علينا ررسول الله ﷺ فقلت: رحمة الله عليك أبا السائب، فشهادني عليك لقد أكرمك الله، فقال لي النبي ﷺ: وما يذريك أن الله أكرمه؟ فقلت: لا أدري بأبي أنت وأمي يا ررسول الله ﷺ فقال ررسول الله ﷺ: أما عثمان فقد جاءه والله اليقين وإني لأرجو له الخير، والله ما أدري وأنا ررسول الله ما يفعل به قالت: فوالله لا أزكي أحدا بعده أبدا، وأحزنني ذلك. قالت: فنمت فأريت لعثمان عينا تجري، فجئت إلى ررسول الله ﷺ فأخبرته، فقال: ذاك عمله أما هو فقد جاءه اليقين، والله إني لأرجو له الخير والله ما أدري وأنا رسول الله ﷺ، ما يفعل بي، قالت: فوالله لا أزكي أحدا بعده أبدا.