The Mushaf-e-fatima is the name of a book which was written by Imam Ali (a.s) at the time of Fatima Zahra (SA) and the contents of this book was inspired by an angel or angel Gabriel to Fatima. This book contains the unseen and mysterious events of the Progeny of Muhammad (pbuh) and it is a sign of Imamate which has been handed down from one Imam to the next one and now Imam of Time, Imam Mahdi (aj) has it. Because according the contents of most narrations this book has been codified and edited after the Messenger of Allah and nothing has been reported about him in the book, but that doesn’t prove the holy prophet’s unawareness of the book, because we believe that the holy prophet was aware of the future too. Since this Mushaf is one of the signs of Imamate and is dedicated to the infallible Imams only, its content has not been revealed and has not been available for people.
source : erfan.ir