This book, "ঈমান ভঙ্গের কারণ" (Reasons for Nullifying Faith) by Sheikh Sulaiman Ibn Nasir Al-Ulwan, delves into the ten fundamental reasons that can invalidate a person's faith. Drawing upon the foundational work of Imam Muhammad ibn Abd al-Wahhab's "Nawaqidh al-Islam," Sheikh Al-Ulwan elaborates on each of these points with detailed explanations. The book aims to raise awareness among Muslims about actions or statements that could compromise their faith, encouraging a conscious effort to preserve it throughout life. It addresses various aspects, including acts of disbelief, making intermediaries with Allah, not considering disbelievers as such, preferring other forms of judgment over divine law, and disliking any aspect of Allah's religion. The text emphasizes the critical importance of understanding these reasons to safeguard one's iman (faith) and navigate contemporary challenges where extreme views on takfir (excommunication) can be prevalent. The book is available from publishers like Siraat Publication and is noted for its detailed discussion on the topic.