Ya'la ibn Mamlak asked Umm Salama about the Qur’anic recitation of Allah’s Messenger (Allah bless him and give him peace), whereupon she described a Qur’anic recitation that was explained letter by letter.
“I said to Anas ibn Malik: 'How was the Qur’anic recitation of Alla’s Messenger (Allah bless him and give him peace)?’ He said: ‘With the voice drawn out over the long vowels.'”
"The Prophet (Allah bless him and give him peace) used to interrupt his Qur’anic recitation. He would say: “Praise be to Allah, the Lord of all the worlds .”
"I asked "A'isha (may Allah be well pleased with her) about the Qur’anic recitation of the Prophet (Allah bless him and give him peace): “Was he used to whispering the recitation, or pronouncing it audibly?” She said: “He used
to do both. He would sometimes whisper and sometimes speak audibly.” I therefore said: “Praise be to Allah, who has granted us flexibility in the matter!”