إِنَّا نَحْنُ نَزَّلْنَا الذِّكْرَ وَإِنَّا لَهُ لَحَافِظُونَ

This verse contains Allah's powerful promise to preserve and protect the Quran from corruption or loss. Unlike previous scriptures that underwent alterations over time, the Quran has been divinely guaranteed protection in its original form. This preservation applies to both the text itself and its message. The verse gives Muslims confidence in the authenticity and reliability of their scripture as the unchanged word of Allah. It also emphasizes divine ownership of the revelation—it is Allah who sent it down and Allah who protects it, not human effort alone. This divine protection has been historically manifested through various means, including the early standardization of the text and the tradition of memorization.