﴿ إِنَّا نَحْنُ نَزَّلْنَا ٱلذِّكْرَ وَإِنَّا لَهُۥ لَحَٰفِظُونَ ﴾

“Behold, it is We Ourselves who have bestowed from on high, step by step, this reminder? and, behold, it is We who shall truly guard it [from all corruption].”

(Lo! We, even We, reveal the Reminder) We sent Gabriel with the Qur'an, (and lo! We verily are its) the Qur'an's (Guardian) from satans such that they do not add or diminish from it anything nor change its judgements; it is also said that this means: We are Guardian of Muhammad (pbuh) from the disbelievers and satans.