And (in Surah At-Tur) He said «والطور. وكتاب مسطور» : "By the Mount, and by a Book inscribed." Qatadah said «مسطور» : it means "written," and from this is «يسطرون» meaning "they write." «في أم الكتاب» means "in the original collected Book." As for what is mentioned in Surah Qaf «ما يلفظ من قول» , its meaning is that whatever word he utters is written in his record of deeds. And Ibn Abbas, may Allah be pleased with them both, said: the angel writes down good and evil. «يحرفون» : "They distort the words from their places," because it is not possible for anyone to completely remove any word from Allah's Book, but they make distortion, meaning they explain it with meanings that are not its original meanings. In «وان كنا عن دراستهم» , by «دراست» is meant recitation. «واعية» , which is in Surah Al-Haqqah, means "one who remembers." «وتعيها» means "he remembers." And as for what is (in Surah Yunus) «وأوحي إلي هذا القرآن لأنذركم به» , in «كم» the address is to the people of Makkah, and by «ومن بلغ» all the rest of the worlds are meant; this Qur'an is a warner to all of them.

Narrated Abu Huraira: I heard Allah's Apostle saying, "Before Allah created the creations, He wrote a Book (wherein He has written): My Mercy has preceded my Anger." and that (Book) is written with Him over the Throne."