al-Hakam bin 'Utayba الحكم بن عتيبة · Chapters on The Virtues of the Qur'an

that he asked Umm Salamah, the wife of the Prophet (ﷺ), about the recitation of the Prophet (ﷺ) and his Salat. She said: "What can you do compared to his Salat? He would pray and then sleep as long as he had prayed. Then he would pray as long as he had slept. Then he slept as long as he had prayed until the morning.' Then she described his recitation. So she described his recitation as word by word."