Rules of Qur'anic Recitation

Tajweed is a system of rules that specifies how to read the Qur'anic text: how each letter is pronounced from its place in the mouth, how vowels are lengthened or shortened, and where to pause. The word "tajweed" derives from an Arabic root meaning "to do well" or "to improve". These rules function as phonetic descriptions of a written text: many of them codify pronunciation distinctions that were once maintained orally and were later set down in written treatises during the early centuries of Islam.

Tajweed must be distinguished from qira'at (variant readings). Qira'at are different recitation traditions, each traced back to a recognized reciter, and sometimes differing in vowels or consonants. Tajweed specifies the pronunciation manner in which each reading is carried out. Accordingly, a reciter follows a particular qira'at—for example, the reading of Hafs from 'Asim—while observing tajweed rules.

Articulation Points and Letter Attributes

The foundation of tajweed is the concept of "makhaarij" (articulation points), the places in the mouth and throat from which letters emerge. These include the palate, soft palate, pharynx, tongue, teeth, and lips. Some letters, such as ayn, ha, qaf, and dad, have articulation points not found in most other languages, making them essential to learn. Each letter also possesses "attributes"—features describing whether the sound is breathy, emphatic, or lengthening.

Rules for Quiescent Nun and Tanween

One of the most studied areas concerns what happens when a quiescent nun (a nun with no vowel) or tanween (the final vowel marker) precedes a certain letter. Four standard outcomes are recognized: izhar (clear pronunciation), idghaam (the nun merges into the following letter), iqlab (the nun becomes a meem sound before ba), and ikhfa (a semi-hidden sound produced through the nose). Similar rules apply to quiescent meem.

Prolongation: Vowel Lengthening

Madd refers to lengthening a vowel. There is a basic short prolongation and extended forms depending on what follows the vowel: a hamza or a quiescent letter. Length is measured in "harakat" (temporal units), a duration based on a standard measure rather than precise physiological timing. The variation in how many harakat a vowel is lengthened remains one of the areas where recitation schools and scholars disagree most.

Pausing and Continuity

Waqf (pausing) marks a stop in recitation. Marks added to the Qur'anic text indicate where pausing is permissible, where continuing is recommended, and where pausing would change the meaning. When pausing, the final vowel of a word is typically dropped. Tajweed is generally taught through listening and repetition in a method called talaqqi, where students recite to a teacher rather than learning from a book alone.