“Salah Ad-Deen Ayubi” is a biographical book series written by Dr. Ali M. Sallabi. This book is written on the life and times of a great soldier mostly known as Salah ad-Din. He was the first sultan of Egypt. This book series is divided into 3 volumes. The first volume is about the crusades prior to the rise of the Ayubid State, second one is about the establishment of the Ayubid state and the third and final volume is about the Battle of Hattin, the conquest of Jerusalem and the third crusade.