Quran 25:5 — The Statute Book (Al-Furqan)

They also said, "Tales from the past that he wrote down; they were dictated to him day and night."*

[25:4] Those who disbelieved said, "This is a fabrication that he produced, with the help of some other people." They have uttered a blasphemy and a falsehood.

[25:6] Say, "This was revealed by the One who knows the Secret* in the heavens and the earth. He is Forgiving, Most Merciful."