AL-KITABU ‘L-MUBIN الكتاب المبين
Lit. “The Manifest or clear book.” The term used in the Qur’an both for the Tablet of Decress (Luahu ‘l-Mahfuz), and for the Qur’an itself.
Surah vi. 59: “No leaf falleth but He knoweth it; neither is there a grain in the darkness of the earth, nor a green thing or sere, but it is noted in the clear book”
Surah iv. 18: “Now hath a light and a clear book come to you from God.”

Based on Hughes, Dictionary of Islam