Ilm al-Tajwid — The Science of Quran Recitation: Giving Each Letter Its Right and Restoring Its Proper Character

Why Tajwid Is Fard

The Quran says: “Recite the Quran with tartil (clear, measured recitation)” (73:4). Scholars classify learning sufficient tajwid to recite correctly as fard ‘ayn (individual obligation) for every Muslim, since the Quran is recited in daily prayer.

The science distinguishes:

• Lahn jali (manifest error): mispronunciation that changes meaning — like pronouncing ض as ظ in a way that alters the word. Forbidden in and outside prayer.
• Lahn khafi (hidden error): correct sound with imperfect articulation — affecting quality but not meaning.

The Makharij al-Huruf (Articulation Points)

Classical tajwid identifies 17 articulation points grouped in 5 regions of the mouth and throat:

1. Al-Jawf (the empty cavity): long vowels (alif, waw, ya)
2. Al-Halq (the throat): three pairs — deepest (hamza, ha), middle (ayn, ha), upper (ghayn, kha)
3. Al-Lisan (the tongue): ten points including qaf, kaf, jim, shin, ya, dad, lam, nun, ra, letters of the teeth
4. Al-Shafatan (the two lips): fa, ba, mim, waw
5. Al-Khayshum (the nasal cavity): all nasal sounds (ghunna)

Core Rules

Noon Sakin and Tanwin (ن ساكنة والتنوين) — four treatments when the letter noon (with sukun) or any tanwin precedes another letter:

• Idgham (merging): noon disappears into the next letter (with or without ghunna)
• Iqlab (transformation): noon becomes mim before ba
• Ikhfa’ (concealment): partial nasalization before 15 letters
• Izhar (clear): noon remains distinct before throat letters

Meem Sakin — similar four treatments for meem with sukun.

Madd (lengthening): natural (2 counts), connected (obligatory 4-5), permitted (2, 4, or 6 counts). Madd letters are alif, waw, ya in specified positions.

Levels of Recitation Speed

Three recognized levels:

1. Tahqiq (verification): slowest, full articulation of every rule — for teaching
2. Tadwir (moderation): middle pace — standard recitation
3. Hadr (rapid): fast but within rule limits — used by memorizers reviewing

The Isnaad of Recitation

Every Quran teacher traces their recitation through an unbroken chain back to the Prophet. The 10 canonical qira’at (recitation traditions) — including Hafs ‘an ‘Asim (dominant today in most Muslim countries) and Warsh (dominant in North Africa) — each transmit slightly different vowelizations and articulations, all equally valid and mutawatir.

See also: Quran Sciences, Sufi Stations Maqamat, Nubuwwa Prophethood, Prophet Muhammad, Al Muzzammil