He asked Umm Salama about the recitation and prayer of the Messenger of Allah ﷺ.She replied, "What concern is his prayer to you? He would pray, then sleep for as long as he had prayed, then pray again for as long as he had slept, then sleep for as long as he had prayed, until morning came."She then described his recitation, depicting it letter by letter.
حدثنا يزيد بن خالد بن موهب الرملي حدثنا الليث عن ابن أبي مليكة
أنه سأل أم سلمة عن قراءة رسول الله ﷺ وصلاته فقالت وما لكم وصلاته كان يصلي وينام قدر ما صلى ثم يصلي قدر ما نام ثم ينام قدر ما صلى حتى يصبح ونعتت قراءته فإذا هي تنعت قراءته حرفا حرفا
[Its chain of transmission is hasan] It was narrated by Tirmidhi in the Book of the Merits of the Quran, Chapter of What Has Been Said About How the Prophet's Recitation Was, hadith no. 2923, from the hadith of Layth bin Saad, and he said, hasan sahih. Yaala bin Mamlak was deemed reliable by Tirmidhi and Ibn Hibban, so his hadith does not fall below the level of hasan.