Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
tabarani:16868ʿUbayd al-ʿIjl > Ibrāhīm b. Saʿīd al-Jawharī > Abū Usāmah > Muḥammad b. ʿAmr > Abū Salamah b. ʿAbd al-Raḥman

[Machine] And what is that? They said, "You prayed two units and Uthman prayed four." He said, "I prayed with the Messenger of Allah ﷺ two units." So they continued with it until he left and prayed four units.  

الطبراني:١٦٨٦٨حَدَّثَنَا عُبَيْدٌ الْعِجْلُ ثنا إِبْرَاهِيمُ بْنُ سَعِيدٍ الْجَوْهَرِيُّ ثنا أَبُو أُسَامَةَ عَنْ مُحَمَّدِ بْنِ عَمْرٍو عَنْ أَبِي سَلَمَةَ بْنِ عَبْدِ الرَّحْمَنِ قَالَ حَجَّ مُعَاوِيَةُ فَصَلَّى رَكْعَتَيْنِ فَلَمَّا دَخَلَ عَلَيْهِ قِيلَ لَهُ مَا عَابَ أَحَدٌ ابْنَ عَمِّكَ عَيْبَكَ قَالَ

وَمَا ذَاكَ؟ قَالُوا صَلَّيْتَ رَكْعَتَيْنِ وَعُثْمَانُ صَلَّى أَرْبَعًا قَالَ «صَلَّيْتُ مَعَ رَسُولِ اللهِ ﷺ رَكْعَتَيْنِ» فَلَمْ يَزَالُوا بِهِ حَتَّى خَرَجَ فَصَلَّى أَرْبَعًا