In the context of the recitation of the Quran, tajwīd ( , , 'elocution') is a set of rules for the correct pronunciation of the letters with all their qualities and applying the various traditional methods of recitation (Qira'at). In Arabic, the term tajwīd is derived from the verb جود (), from the triliteral root (), meaning enhancement or to make something excellent. Technically, it means giving every letter its right in reciting the Qur'an. or the science of in Islam is a science by which one learns the pronunciation of Qur’anic words as pronounced by the Islamic prophet Muhammad. The beginning of the science of was when the Islamic state expanded in the third century of Hijra, where error and melody increased in the Qur’an due to the entry of many non-Arabs to Islam. So the scholars of the Qur’an began to write the rules and rules of intonation. It is said that the first person to collect the science of in his book was (774 - 838 CE) in the third century of Hijra. History The history of Quranic recitation is tied to the history of qira'at, as each reciter had their own set of tajwid rules, with much overlap between them. Abu Ubaid al-Qasim bin Salam (774 - 838 CE) 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-Qiraat. He wrote about 25 reciters, including the 7 mutawatir reciters. He made the reality, transmitted through reciters of every generation, a science with defined rules, terms, and enunciation. Abu Bakr Ibn Mujāhid (859 - 936 CE) wrote a book called Kitab al-Sab’ fil-qirā’āt "The Seven of the Recitations." He is the first to limit the number of recitations to the seven known. Imam Al-Shatibi (1320 - 1388 CE) wrote a poem outlining the two most famous ways passed down from each of seven strong imams, known as ash-Shatibiyyah. In it, he documented the rules of recitation of Naafi’, Ibn Katheer, Abu ‘Amr, Ibn ‘Aamir, ‘Aasim, al-Kisaa’i, and Hamzah. It is 1173 lines long and a major reference for the seven qira’aat. Ibn al-Jazari (1350 - 1429 CE) wrote two large poems about Qira'at and tajwid. One was Durrat Al-Maa'nia (), in the readings of three major reciters, added to the seven in the Shatibiyyah, making it ten. The other is Tayyibat