"The Messenger of Allah ﷺ used to enjoin upon us to make the prayer short, but he would lead us in prayer and recite As-Saffat." (Using translation from Nasāʾī 826)   

كَانَ رَسُولُ اللهِ ﷺ يَأْمُرُنَا بِالتَّخْفِيفِ وَإِنْ كَانَ لَيَؤُمُّنَا بِالصَّافَّاتِ  

[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."  

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

[Machine] He heard Jaabir bin Samurah saying that the Messenger of Allah ﷺ used to pray the prayers similar to your prayers today, but he would lighten them. His prayer was lighter than your prayers. He used to recite Al-Waqi'ah and similar chapters in the dawn prayer.  

أَنَّهُ سَمِعَ جَابِرَ بْنَ سَمُرَةَ يَقُولُ كَانَ رَسُولُ اللهِ ﷺ يُصَلِّي الصَّلَوَاتِ كَنَحْوٍ مِنْ صَلَاتِكُمُ الَّتِي تُصَلُّونَ الْيَوْمَ وَلَكِنَّهُ كَانَ يُخَفِّفُ كَانَتْ صَلَاتُهُ أَخَفَّ مِنْ صَلَاتِكُمْ كَانَ يَقْرَأُ فِي الْفَجْرِ الْوَاقِعَةَ وَنَحْوَهَا مِنَ السُّوَرِ