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.
bayhaqi:5436ʿAbdullāh b. Yūsuf al-Aṣbahānī > Abū Muḥammad ʿAbdullāh b. Muḥammad b. Isḥāq al-Fākihī Bimakkah > Abū Yaḥyá b. Abū Masarrah > Khallād b. Yaḥyá > Yūnus b. Abū Isḥāq > Abū Isḥāq > ʿAbd al-Raḥman b. Yazīd

[Machine] They told us that the Prophet ﷺ prayed two units of prayer, and Abu Bakr also prayed two units of prayer. So he said, yes, and I will tell you about it now, but Uthman was the imam, so I do not go against him and disagreements are evil.  

البيهقي:٥٤٣٦أَخْبَرَنَا عَبْدُ اللهِ بْنُ يُوسُفَ الْأَصْبَهَانِيُّ أنبأ أَبُو مُحَمَّدٍ عَبْدُ اللهِ بْنُ مُحَمَّدِ بْنِ إِسْحَاقَ الْفَاكِهِيُّ بِمَكَّةَ ثنا أَبُو يَحْيَى بْنُ أَبِي مَسَرَّةَ ثنا خَلَّادُ بْنُ يَحْيَى ثنا يُونُسُ بْنُ أَبِي إِسْحَاقَ عَنْ أَبِي إِسْحَاقَ عَنْ عَبْدِ الرَّحْمَنِ بْنِ يَزِيدَ قَالَ كُنَّا مَعَ عَبْدِ اللهِ بْنِ مَسْعُودٍ بِجَمْعٍ فَلَمَّا دَخَلَ مَسْجِدَ مِنًى فَقَالَ كَمْ صَلَّى أَمِيرُ الْمُؤْمِنِينَ؟ قَالُوا أَرْبَعًا فَصَلَّى أَرْبَعًا قَالَ فَقُلْنَا أَلَمْ

تُحَدِّثْنَا أَنَّ النَّبِيَّ ﷺ صَلَّى رَكْعَتَيْنِ وَأَبَا بَكْرٍ صَلَّى رَكْعَتَيْنِ؟ فَقَالَ بَلَى وَأَنَا أُحَدِّثُكُمُوهُ الْآنَ وَلَكِنَّ عُثْمَانَ كَانَ إِمَامًا فَمَا أُخَالِفُهُ وَالْخِلَافُ شَرٌّ