The Arabic, UMM-UL-KITÄB in a direct translation may be the Mother of the Book. But it has several connotation; such as the; main record, the principle tablet, where upon the essence of God's Will and law and all the affairs have been written.

      The general fate of creatures, and the occurence of all events will happen in two stages, or two phases. One of the two stages is unfixed and can be altered, but the second stage is fixed and not changeable. These two stages are some how like two boards or two recording books. In one of the boards whatever is written can be blotted off or be replaced by some other words or letters, but in the second one, it is not possible to change or erase that which is written there. At least no creature can alter that, because nothing is impossible through the infinite power and knowledge of God. Here, to make the matter more readily understandable, we explain it through an example:ِ

      We may say, if a man eats a certain kind of poison, he shall immediately die. But we also know that there is antipoison for that to nullify its effects, and by serving it the poisoned will be saved. The whole event which is related to the said poison and antitoxin has its record in the temporary and changeable board or book . Now if we consider the death of the poisoned with all its cause and effect, such as eating the poison and having no access to the antitoxin, the death here is certain, and it will be recorded in the fixed board or memory of God's knowledge. In other word the knowledge of God works in two stages of fixed and unfixed which is on condition. IMAM SAJJAD (AS) has said:ِ

      I could inform you of all the past and future events, if, there was not one verse in the Qurän, (S13:39) which says:ِ Allah blots out and cancels what He wants and confirms what He wills, and with Him is the mother of the book.