Abu Ubaid al-Qasim ibn Sallam al-Khurasani al-Harawi (Arabic: أبو عبيد القاسم بن سلاّم الخراساني الهروي, romanized: Abū ‘Ubayd al-Qāsim ibn Sallām al-Khurāsānī al-Harawī; c. 770–838) was an Arab philologist and the author of many standard books on lexicography, Qur’anic sciences, hadith, and fiqh.
He was the first to develop a recorded science for tajwid, giving the rules of tajwid names and putting it into writing in his book called al-Qirā'āt. He wrote about 25 reciters, including the 7 mutawatir reciters.[2] He made the reality, transmitted through reciters of every generation, a science with defined rules, terms, and enunciation.[3][4] He wrote extensively on the originally revealed, but then abrogated, verses from the Qur’an. [5][6]
^Ibn Warraq, Origins of the Koran – Classic Essays on Islam’s Holy Book, [Prometheus Books, Amherst, NY 1998], Part Two: The Collections and the Variants of the Koran, 9. Abu ‘Ubaid on the Verses Missing from the Koran, by Arthur Jeffery, p. 151.
