Abū Bakr ibn Abī Shaybah, who passed away in 235 after Hijrah, was a renowned Islamic scholar. He is best known for his work "Kitāb Al-Īmān," which is part of the larger compilation "Al-Musannaf." This work is a significant early exploration of the concept of faith, or īmān, and serves as a rebuttal to the views of the Murjiah sect. It brings together ahādīth and narrations from the Prophet Muhammad and the Salaf, the early generations of Muslims.

Ibn Abī Shaybah was a central figure in Islamic scholarship, recognized for his extensive memorization and mastery of hadīth. He was a student of esteemed teachers like Ismā’īl ibn ‘Ulayyah and Ibn Al-Mubārak and later became a mentor to distinguished students, such as Al-Bukhārī and Muslim. His significant contributions are reflected in his many works, including "Al-Musannaf," "Al-Musnad," and "At-Tafsīr."

"Kitāb Al-Īmān" is unique in its straightforward approach, bringing together narrations without extensive commentary or chapter divisions, a departure from the more structured format of "Al-Musannaf." This approach underscores Ibn Abī Shaybah's intention to present the teachings in a clear, easy-to-understand way.

The work delves into crucial aspects of Islamic faith, emphasizing the significance of prayer, ethical behavior, and honesty.

Ibn Abī Shaybah's concluding remarks on faith beautifully encapsulate its essence: "It is verily in speech and deeds, and it increases and decreases." This profound observation embodies the dynamic and all-encompassing nature of īmān in Islam, making "Kitāb Al-Īmān" an invaluable resource for understanding the fundamental principles of the Muslim faith.