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:5283Abū Bakr b. al-Ḥasan al-Qāḍī And ʾAbū Saʿīd b. Abū ʿAmr > Abū al-ʿAbbās Muḥammad b. Yaʿqūb > Muḥammad b. Isḥāq > ʿAffān > Sukayn b. ʿAbd al-ʿAzīz > al-Muthanná al-Aḥmar > ʿAbd al-ʿAzīz b. Qays > Saʾalt Anas

[Machine] About the measure of the prayer of the Prophet ﷺ, he said: "So Anas bin Malik or one of his sons commanded us and led us in the Dhuhr or Asr prayer. He recited Surah Al-Mursalat and those who raised questions continued to wonder."  

البيهقي:٥٢٨٣وَأَخْبَرَنَا أَبُو بَكْرِ بْنُ الْحَسَنِ الْقَاضِي وَأَبُو سَعِيدِ بْنُ أَبِي عَمْرٍو قَالَا ثنا أَبُو الْعَبَّاسِ مُحَمَّدُ بْنُ يَعْقُوبَ ثنا مُحَمَّدُ بْنُ إِسْحَاقَ ثنا عَفَّانُ ثنا سُكَيْنُ بْنُ عَبْدِ الْعَزِيزِ حَدَّثَنِي الْمُثَنَّى الْأَحْمَرُ ثنا عَبْدُ الْعَزِيزِ بْنُ قَيْسٍ قَالَ سَأَلْتُ أَنَسًا

عَنْ مِقْدَارِ صَلَاةِ النَّبِيِّ ﷺ قَالَ فَأَمَرَ النَّضْرَ بْنَ أَنَسٍ أَوْ أَحَدَ بَنِيهِ فَصَلَّى بِنَا الظُّهْرَ أَوِ الْعَصْرَ فَقَرَأَ بِنَا وَالْمُرْسَلَاتِ وَعَمَّ يَتَسَاءَلُونَ