Ya'la ibn Mumallak said that he asked Umm Salamah about the recitation and prayer of the Messenger of Allah ﷺ. She said: What have you to do with his prayer? He would pray, then sleep as long as he had prayed, till morning. She then described his recitation and did so with an exposition word by word.
عَنْ قِرَاءَةِ رَسُولِ اللَّهِ ﷺ وَصَلاَتِهِ فَقَالَتْ وَمَا لَكُمْ وَصَلاَتَهُ كَانَ يُصَلِّي وَيَنَامُ قَدْرَ مَا صَلَّى ثُمَّ يُصَلِّي قَدْرَ مَا نَامَ ثُمَّ يَنَامُ قَدْرَ مَا صَلَّى حَتَّى يُصْبِحَ وَنَعَتَتْ قِرَاءَتَهُ فَإِذَا هِيَ تَنْعَتُ قِرَاءَتَهُ حَرْفًا حَرْفًا