It was narrated that Ka'b bin 'Ujrah said:
"The Messenger of Allah mentioned a Fitnah (tribulation) that had drawn nigh. Then a man passed by with his head covered. The Messenger of Allah said: 'On that day, this man will be following right guidance.' I leapt up and took hold of 'Uthman's arms, then I turned to face the Messenger of Allah and said: 'This man?' He said: 'This man.'"

حَدَّثَنَا عَلِيُّ بْنُ مُحَمَّدٍ، حَدَّثَنَا عَبْدُ اللَّهِ بْنُ إِدْرِيسَ، عَنْ هِشَامِ بْنِ حَسَّانَ، عَنْ مُحَمَّدِ بْنِ سِيرِينَ، عَنْ كَعْبِ بْنِ عُجْرَةَ، قَالَ ذَكَرَ رَسُولُ اللَّهِ ﷺ فِتْنَةً فَقَرَّبَهَا فَمَرَّ رَجُلٌ مُقَنَّعٌ رَأْسُهُ فَقَالَ رَسُولُ اللَّهِ ﷺ " هَذَا يَوْمَئِذٍ عَلَى الْهُدَى " . فَوَثَبْتُ فَأَخَذْتُ بِضَبْعَىْ عُثْمَانَ ثُمَّ اسْتَقْبَلْتُ رَسُولَ اللَّهِ ﷺ فَقُلْتُ هَذَا قَالَ " هَذَا " .