This is a book mostly for the layman who is not fussed about getting the facts right but who just wants to enjoy a good story. The work is centuries old and so it is better to read a more critical work on Muhammad (if such a book exists at the moment) before reading this book. This is because it is written by a devout Muslim and it would be fair to presume that it is concerned mostly with religious issues then the historical truth (like trying to learn about the Historical Jesus from the Gospels).