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.
Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
bayhaqi:5437 – Abū ʿAlī al-Rūdhbārī > Abū Bakr b. Dāsah > Abū Dāwud > Mūsá b. Ismāʿīl > Ḥammād > Ayyūb > al-Zuhrī > ʿUthmān b. ʿAffān Atam al-Ṣalāh Biminá from Ajl al-Aʿrāb Liʾannahum Kathurūā ʿĀmaʾidh Faṣallá Bi-al-Nnās Arbaʿ Liyuʿlimahum

Uthman offered complete prayer at Mina for the sake of bedouins who attended (hajj) in large numbers that year. He led the people four rak'ahs in prayer in order to teach them that the prayer (i.e. noon or afternoon prayer) essentially contained four rak'ahs. (Using translation from Abū Dāʾūd 1964)   

البيهقي:٥٤٣٧ – أَخْبَرَنَا أَبُو عَلِيٍّ الرُّوذْبَارِيُّ أنبأ أَبُو بَكْرِ بْنُ دَاسَةَ ثنا أَبُو دَاوُدَ ثنا مُوسَى بْنُ إِسْمَاعِيلَ ثنا حَمَّادٌ عَنْ أَيُّوبَ عَنِ الزُّهْرِيِّ أَنَّ عُثْمَانَ بْنَ عَفَّانَ ؓ أَتَمَّ الصَّلَاةَ بِمِنًى مِنْ أَجْلِ الْأَعْرَابِ لِأَنَّهُمْ كَثُرُوا عَامَئِذٍ فَصَلَّى بِالنَّاسِ أَرْبَعًا لِيُعْلِمَهُمْ

أَنَّ الصَّلَاةَ أَرْبَعٌ  

See similar narrations below:

Collected by Abū Dāwūd, Ibn Ḥibbān
abudawud:1964 – Mūsá b. Ismāʿīl > Ḥammād > Ayyūb > al-Zuhrī > ʿUthmān b. ʿAffān Atam al-Ṣalāh Biminá from Ajl al-Aʿrāb Lʾannahum Kathurūā ʿĀmaʾidh Faṣallá Bi-al-Nnās Arbaʿ Liyuʿlimahum

Uthman offered complete prayer at Mina for the sake of bedouins who attended (hajj) in large numbers that year. He led the people four rak'ahs in prayer in order to teach them that the prayer (i.e. noon or afternoon prayer) essentially contained four rak'ahs.  

أبو داود:١٩٦٤ – حَدَّثَنَا مُوسَى بْنُ إِسْمَاعِيلَ حَدَّثَنَا حَمَّادٌ عَنْ أَيُّوبَ عَنِ الزُّهْرِيِّ أَنَّ عُثْمَانَ بْنَ عَفَّانَ أَتَمَّ الصَّلاَةَ بِمِنًى مِنْ أَجْلِ الأَعْرَابِ لأَنَّهُمْ كَثُرُوا عَامَئِذٍ فَصَلَّى بِالنَّاسِ أَرْبَعًا لِيُعْلِمَهُمْ

أَنَّ الصَّلاَةَ أَرْبَعٌ  

ذِكْرُ وَصْفِ صَلَاةِ الْمَرْءِ إِذَا صَلَّى قَاعِدًا

ibnhibban:2512 – Muḥammad b. ʿUmar b. Yūsuf > Muḥammad b. ʿAbdullāh al-Mukharrimī > Abū Dāwud al-Ḥafarī > Ḥafṣ b. Ghiyāth > Ḥumayd al-Ṭawīl > ʿAbdullāh b. Shaqīq > ʿĀʾishah

[Machine] "That the Prophet ﷺ was sitting in a reclining position."  

ابن حبّان:٢٥١٢ – أَخْبَرَنَا مُحَمَّدُ بْنُ عُمَرَ بْنِ يُوسُفَ قَالَ حَدَّثَنَا مُحَمَّدُ بْنُ عَبْدِ اللَّهِ الْمُخَرِّمِيُّ قَالَ حَدَّثَنَا أَبُو دَاوُدَ الْحَفَرِيُّ عَنْ حَفْصِ بْنِ غِيَاثٍ عَنْ حُمَيْدٍ الطَّوِيلِ عَنْ عَبْدِ اللَّهِ بْنِ شَقِيقٍ عَنْ عَائِشَةَ

«أَنَّ النَّبِيَّ ﷺ صَلَّى مُتَرَبِّعًا»