(7) باب مَنَاقِبُ عُثْمَانَ بْنِ عَفَّانَ أَبِي عَمْرٍو الْقُرَشِيِّ رضى الله عنه
Narrated Ibn `Umar:
During the lifetime of the Prophet (ﷺ) we considered Abu Bakr as peerless and then `Umar and then `Uthman (coming next to him in superiority) and then we used not to differentiate between the companions of the Prophet.
Reference: Sahih al-Bukhari 3697
In-book reference: Book 62, Hadith 48
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 5, Book 57, Hadith 47