""Al-Din Al-Fitri" is a profound philosophical work that explores fundamental issues related to human nature and its connection to religion. The author, Ahmed Jazini, presents a comprehensive vision of the concept of religion in divine faiths and global philosophies, examining the linguistic and philosophical roots of religion and its historical evolution. The book delves into contemporary issues such as religious pluralism, atheism, and the relationship between science and religion, with a focus on the importance of human instinct (fitrah) as evidence of God's existence. Through an analytical and methodical approach, the author takes readers on an intellectual journey to understand how humans can transcend intellectual and social challenges to arrive at religious truth. It is an invitation to reflect on the relationship between humanity and its Creator..