Saʿd reported that on the Day of Uhud I saw on the right side of Messenger of Allah ﷺ and on his left side two persons dressed in white clothes and whom I did not see before nor after that, and they were Gabriel and Michael (Allah be pleased with both of them).  

عَنْ يَمِينِ رَسُولِ اللَّهِ ﷺ وَعَنْ شِمَالِهِ يَوْمَ أُحُدٍ رَجُلَيْنِ عَلَيْهِمَا ثِيَابُ بَيَاضٍ مَا رَأَيْتُهُمَا قَبْلُ وَلاَ بَعْدُ يَعْنِي جِبْرِيلَ وَمِيكَائِيلَ عَلَيْهِمَا السَّلاَمُ  

I saw on the right side of Messenger of Allah ﷺ and on his left side two persons with white clothes on the Day of Uhtid fighting a desperate fight, and I saw them neither before nor after that.  

عَنْ يَمِينِ رَسُولِ اللَّهِ ﷺ وَعَنْ يَسَارِهِ رَجُلَيْنِ عَلَيْهِمَا ثِيَابٌ بِيضٌ يُقَاتِلاَنِ عَنْهُ كَأَشَدِّ الْقِتَالِ مَا رَأَيْتُهُمَا قَبْلُ وَلاَ بَعْدُ