Allah Subhanahu wa Ta'ala says (Qur'an Translation): Nay, I swear by the settings of the stars. And Indeed! that verily is a tremendous oath, if you but knew. That (this) is indeed an honourable recitation (the noble Qur'an). In a Book well guarded. Which none can touch but the purified. A revelation from the Sustainer of the Worlds. Is it this Statement that you consider unimportant? (Al-Waqi'ah 56: 75-81)