Belief in the Kutub (revealed books)

Another pillar of faith which is very important for Muslims to believe is ‘the belief in the kutub’. 
 The Arabic word “Kutub” means books and scriptures, and is the plural for “Kitab (a book, scroll and scripture).
They are called kutub because they are written (Maktoob) scriptures.
In this context, kutub means those Books that Allah sent down and revealed to His Messengers as a mercy and guidance for mankind to lead them to true happiness in this life and in the Hereafter.
 Faith and belief in the Scriptures comprises four aspects:
1. To believe that Allah sends them down as revelation.
 2. To believe in all the Scriptures about which we have specific information: such as the Qur’an sent down and revealed to Muhammad (sallallahu alayhi wa sallam); the Torah sent down and revealed to Musa (Alayhi wa sallam); the Injil (the Gospel) sent down and revealed to ‘Isa (Alayhi wa sallam); and the Zabur (the Psalms) sent down and revealed to Dawud (Alayhi wa sallam). We also believe generally in all other scriptures sent down and revealed by Allah, even though we do not know their particular names.
 3. To attest and confirm as truth all the information that these scriptures contain, such as the information of the Qur’an and that information which has been left unchanged by corruptions in the previous scriptures [which may only be known by its agreement to the Koran].
 4. To execute all the orders and implement all the commandments contained in these Scriptures and Books unless Allah commanded to the contrary through “Naskh” (abrogation, over ruling).
We accept whatever rules and instructions they contain, even if we do not know (and fathom) the wisdom behind them.
We believe that the Qur’an abrogates all the previous scriptures. Allah the Most Exalted said: “And We have sent down to you (O Muhammad) the Book (this Qur’an) in truth, confirming the Scripture that came before it, and muhaimin (dominant, and a trustworthy witness) over it.” [Surah al‐Ma‘idah (5): 48]
 This means that the Qur’an is the Supreme Authority and adjudicator, dominant over all other Scriptures and Books. As such, no law, commandment or instruction contained in those books is to be implemented unless it is proven to be sound and uncorrupted and confirmed by the Qur’anic texts, according to Shaykh Ibn Uthaymen in ‘The Explanation of the Fundamentals of Islamic Belief’.
 The great benefits of believing in the Scriptures and Books include:
 1. Knowledge that Allah has intimate concern for His slaves such that He sent down for each nation and community scriptures to guide them to success.
 2. Knowledge that Allah, by His wisdom, commanded each nation with what is suitable for them, as He the most exalted said: To each among you We have prescribed a Law and a Clear Way. [Surah al‐Ma‘idah (5): 48].
3. Thankfulness to Allah’s bounties for sending down and revealing these Scriptures and Books to lead mankind to guidance.