Introduction to the Science of Hadith Introduction to the Science of Hadith (Ibn al-Ṣalāḥ's) Introduction to the Science of Hadith () is a 13th-century book written by `Abd al-Raḥmān ibn `Uthmān al-Shahrazūrī, better known as Ibn al-Ṣalāḥ, which describes the Islamic discipline of the science of hadith, its terminology and the principals of biographical evaluation. A hadith is a recorded statement, action or approval of the Islamic prophet Muhammad which serves as the second source of legislature in Islamic law. The science of hadith that this work describes contains the principles with which a hadith specialist evaluates the authenticity of individual narrations. "The Introduction" comprises 65
Hadith terminology "with something, such as numerous chains of narration, strengthening it." Ibn Hajar's definitions indicate that there are five conditions to be met for a particular "hadith" to be considered "ṣaḥīḥ": A number of books were authored in which the author stipulated the inclusion of "ṣaḥīḥ hadith" alone. According to Ahl al-Sunna, this was only achieved by the first two books in the following list: "Ḥasan" ( meaning "good") is used to describe "hadith" whose authenticity is not as well-established as that of "ṣaḥīḥ hadith", but sufficient for use as supporting evidence. Ibn Hajar defines a "hadith" that is "ḥasan lithatihi"""ḥasan"