In this modern time in which atheism and apostasy are dominant, it is needed to resort to Islam so that we may save ourselves from the man-made philosophies which are affecting our Monotheistic creed and cultural values. This treaties clearly explains Tauhid, Shirk and Nifaq from the Islamic point of view so that the concept remains clear in our minds.

"Religious Fundamentals" by Muhammad bin Sulaiman At-Tamimi is a significant work that delves into the core tenets of Islamic faith and practice. The author, a renowned Islamic scholar, presents a detailed exposition of fundamental Islamic beliefs and practices, aiming to provide a clear and comprehensive understanding of the religion. Here are some key features and themes of the book:

1. Core Beliefs: The book covers the essential beliefs of Islam, including the oneness of Allah (Tawhid), the prophethood of Muhammad (peace be upon him), and the belief in the afterlife. At-Tamimi elaborates on these concepts to ensure a thorough understanding.

2. Pillars of Islam: It details the five pillars of Islam: Shahada (declaration of faith), Salah (prayer), Zakat (almsgiving), Sawm (fasting during Ramadan), and Hajj (pilgrimage to Mecca). Each pillar is explained with its significance, rules, and the spiritual benefits it offers.

3. Islamic Jurisprudence: The book addresses various aspects of Islamic jurisprudence (Fiqh), providing guidelines on how to conduct oneself in accordance with Sharia (Islamic law). This includes personal, social, and economic aspects of life.

4. Ethics and Morality: At-Tamimi emphasizes the importance of ethics and morality in Islam. He discusses the moral principles that Muslims are encouraged to uphold, such as honesty, compassion, justice, and humility.

5. Spiritual Guidance: The book offers spiritual guidance to help Muslims strengthen their faith and maintain a close relationship with Allah. It includes practical advice on how to develop piety and devotion through worship and good deeds.

6. Contemporary Relevance: While grounded in classical Islamic scholarship, the book also addresses contemporary issues and challenges faced by Muslims. It provides insights on how to navigate modern life while staying true to Islamic principles.

7. Clarity and Accessibility: Written in a clear and accessible style, the book is suitable for both new Muslims and those seeking to deepen their understanding of the faith. At-Tamimi's explanations are straightforward, making complex theological concepts easy to grasp.

8. Scholarly Approach: The author’s scholarly approach ensures that the book is well-researched and rooted in authentic sources. References to the Qur'an and Hadith are provided to support the discussions.

"Religious Fundamentals" by Muhammad bin Sulaiman At-Tamimi is an essential resource for anyone looking to understand the basic principles of Islam. It serves as both an educational tool and a spiritual guide, helping readers to align their lives with the teachings of Islam.