Umm Salama was asked about the night prayer of the Messenger of Allah ﷺ and his recitation. She replied, "What concern is his prayer and recitation to you? He used to pray for as long as he slept and sleep for as long as he prayed." Then she described his recitation as clear and distinct, letter by letter.
حدثنا يحيى بن إسحاق قال أخبرني ليث بن سعد قال حدثنا عبد الله بن أبي مليكة
سألت أم سلمة عن صلاة رسول الله ﷺ بالليل وقراءته فقالت ما لكم ولصلاته ولقراءته كان يصلي قدر ما ينام وينام قدر ما يصلي وإذا هي تنعت قراءة مفسرة حرفا حرفا