ENOfficial
It was narrated that Qatadah said: Az-Zubair offered the funeral prayer for `Uthman (رضي الله عنه) and buried him in accordance with his instructions.
Source: sunnah.com
Other translations
Arabic
حَدَّثَنَا عَبْدُ الرَّزَّاقِ، حَدَّثَنَا مَعْمَرٌ، عَنْ قَتَادَةَ، قَالَ صَلَّى الزُّبَيْرُ عَلَى عُثْمَانَ رَضِيَ اللَّهُ عَنْهُ وَدَفَنَهُ وَكَانَ أَوْصَى إِلَيْهِ.
sunnah.com