In this pivotal work from 2018 by Al Fursan Foundation for Publishing and Distribution, Dr. Abdullah Maarouf Omar explores the profound consequences of losing Jerusalem. The book provides a detailed analysis of the historical, political, and spiritual losses incurred by the Muslim world following the city's fall. Dr. Omar examines the event's lasting impact on Muslim identity, regional stability, and the collective consciousness, presenting a comprehensive study on the deep significance of Jerusalem and the void left by its absence from Muslim control, a topic that continues to resonate today.