Sunan Ibn Majah is one of the six major collections of hadith in Sunni Islam. Compiled by the Islamic scholar Ibn Majah in the 9th century, it contains around 4,000 hadiths, which are sayings and actions of the Prophet Muhammad. This collection is known for its unique content, including many hadiths not found in other collections. The book is divided into various chapters covering different aspects of Islamic life, such as prayer, fasting, and ethics. Sunan Ibn Majah is considered important for understanding Islamic teachings and is often referenced by scholars and students of Islamic jurisprudence.