Muslim and Indian (northern states): from an Arabic personal name based on amīn ‘trustworthy’, ‘faithful’, ‘honest’. Al-Amīn ‘the trustworthy’ is an honorific title of the Prophet Muhammad. The term is used in combination with other words to form compound names: for example, Ruḥ-ul-Amīn ‘faithful spirit’ is an epithet of the Angel Gabriel mentioned in the Qur’an (26:193). Al-Amīn (787–813) was the name of the sixth Abbasid khalif of Baghdad. In India, the name came to be used as a term denoting a government official concerned with investigation of land claims and revenue claims, collection of revenue, and land surveying.