عَنْ يَعْلَى بْنِ مَمْلَكٍ قَالَ: سَأَلْتُ أُمَّ سَلَمَةَ رَضِيَ اللَّهُ عَنْهَا عَنْ صَلَاةِ رَسُولِ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ بِاللَّيْلِ وَقِرَاءَتِهِ، فَقَالَتْ: مَا لَكُمْ وَلِصَلَاتِهِ وَلِقِرَاءَتِهِ، كَانَ يُصَلِّي قَدْرَ مَا يَنَامُ، وَيَنَامُ قَدْرَ مَا يُصَلِّي، وَإِذَا هِيَ تَنْعَتُ قِرَاءَةً مُفَسَّرَةً حَرْفًا حَرْفًا
Ya'la bin Mamlak says: I asked Sayyida Umm Salama (may Allah be pleased with her) about the night prayer and recitation of the Messenger of Allah (peace and blessings be upon him). She said: What concern do you have with the prayer and recitation of the Messenger of Allah (peace and blessings be upon him)? He would pray as much as he slept, and he would sleep as much as he prayed. Then she described the manner of his recitation, that it was absolutely clear, letter by letter.