وَتَفْصِيلَ كُلِّ شَىْءٍ
(and a detailed explanation of everything) Meaning the allowed, the prohibited, the preferred and the disliked matters. The Qur'an deals with the acts of worship, the obligatory and recommended matters, forbids the unlawful and discourages from the disliked. The Qur'an contains major facts regarding the existence and about matters of the future in general terms or in detail. The Qur'an tells us about the Lord, the Exalted and Most Honored, and about His Names and Attributes and teaches us that Allah is glorified from being similar in any way to the creation. Hence, the Qur'an is,