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 of the Quran and Sunnah single manner. The hadith also refutes the shi'a tradition that the wives of the Prophet are not part of ahlul bayt. Because the truth of the matter is that Zaid clearly says, "His wives are the members of his family...". It is true that he mentions that the hadith is pertaining to Ali, Aqil, and Jafar, and all their offsprings; but, as is the well-known position in the sunni tradition, a companion or anyone other than the prophet can not make official any ruling or opinion. Zaid did not tell why he believes the hadith is pertaining only to Ali,