Narrated Ibn `Abbas:
The Prophet (ﷺ) used to move his tongue when the divine Inspiration was being revealed to him. (Sufyan, a subnarrator, demonstrated (how the Prophet (ﷺ) used to move his lips) and added. "In order to memorize it." So Allah revealed: "Move not your tongue concerning (the Qur'an) to make haste therewith." (75.16)
Reference | : Sahih al-Bukhari 4927 |
In-book reference | : Book 65, Hadith 447 |
USC-MSA web (English) reference | : Vol. 6, Book 60, Hadith 449 |
(deprecated numbering scheme) |