ʿAbd-Allāh ibn Abī Isḥāq al-Ḥaḍramī (Arabic, عبد الله بن أبي اسحاق الحضرمي), (died AD 735 / AH 117) is considered the first grammarian of the Arabic language. He compiled a prescriptive grammar by referring to the usage of the Bedouins, whose language was seen as especially pure (see also iʿrāb, aʿrāb). He is also considered the first person to use linguistic analogy in Arabic. Abi Ishaq's work was considered influential upon later grammarians, as he was quoted as an authority by Sibawayhi in his seminal work on Arabic grammar seven times.