Did you meet the Messenger of Allah ﷺ? He said: No, but there reached me of his knowledge and certainty of faith that which would reach a virgin in her seclusion .He [ʿUthman] recited the tashahhud then he said: Verily Allah, may He be glorified and exalted, sent Muhammad with the truth and I was one of those who responded to (the call of) Allah and His Messenger, and I believed in that with which Muhammad ﷺ was sent. Then I migrated twice, and I also attained the honour of becoming the son-in law of the Messenger of Allah ﷺ, I swore allegiance to the Messenger of Allah ﷺ, and by Allah, I never disobeyed him or betrayed him until Allah, may He be glorified and exalted, took his soul in death.
لَهُ ابْنَ أَخِي أَدْرَكْتَ رَسُولَ اللهِ ﷺ؟ قَالَ فَقُلْتُ لَهُ لَا وَلَكِنْ خَلَصَ إِلَيَّ مِنْ عِلْمِهِ وَالْيَقِينِ مَا يَخْلُصُ إِلَى الْعَذْرَاءِ فِي سِتْرِهَا قَالَ فَتَشَهَّدَ ثُمَّ قَالَ أَمَّا بَعْدُ فَإِنَّ اللهَ ﷻ بَعَثَ مُحَمَّدًا ﷺ بِالْحَقِّ فَكُنْتُ مِمَّنِ اسْتَجَابَ لِلَّهِ وَلِرَسُولِهِ وَآمَنَ بِمَا بُعِثَ بِهِ مُحَمَّدٌ ﷺ ثُمَّ هَاجَرْتُ الْهِجْرَتَيْنِ كَمَا قُلْتُ وَنِلْتُ صِهْرَ رَسُولِ اللهِ ﷺ وَبَايَعْتُ رَسُولَ اللهِ ﷺ فَوَاللهِ مَا عَصَيْتُهُ وَلا غَشَشْتُهُ حَتَّى تَوَفَّاهُ اللهُ ﷻ