U+FDF0 Arabic Ligature Salla Used As Koranic Stop Sign Isolated Form

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In the context of the recitation of the Quran, tajwīd (Arabic: تجويد tajwīd, IPA: [tadʒˈwiːd], '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 (jawada), meaning enhancement or to make something excellent. Technically, it means giving every letter its right in reciting the Qur'an.

Tajwīd or the science of tajwīd 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 tajwīd was when the Islamic state expanded in the third century of Hijra, where errors in pronunciation 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 of intonation. It is said that the first person to collect the science of tajwīd in his book Kitāb al-Qirā'āt was Imām Abu ʻUbaid al-Qāsim bin Salām (774–838 CE) in the third century of Hijra.