Hadith terminology (Arabic: مُصْطَلَحُ الحَدِيْث‎) muṣṭalaḥ al-ḥadīth) is the body of terminology in Islam which specifies the acceptability of the sayings (hadith) attributed to the prophet Muhammad and other early Islamic figures of significance, such as Muhammad's family and/or successors. Individual terms distinguish between those hadith considered rightfully attributed to their source or detail the faults of those of dubious provenance.