Every Arabic letter has a weight — some are thick and heavy (Tafkheem), others are thin and light (Tarqeeq). Using the wrong weight is one of the most common mistakes in Quran recitation, and mastering this gives your tilawah a professional, native quality.
The back of the tongue rises towards the soft palate (roof of the mouth), making the letter sound full, rounded, and deep. Your mouth fills with sound.
Try it: Say the English letter "O" in "Gold" — your tongue naturally rises at the back. That's the heavy position.
Arabic letters: خ ص ض ط ظ غ ق
The tongue stays low and flat. The letter sounds thin, precise, and forward. Your mouth is not filled — the sound comes from the front.
Try it: Say the English letter "E" in "See" — your tongue is flat and low. That's the light position.
Arabic: all 21 remaining letters (except the special cases of ر and لله)
All Arabic letters fall somewhere on this spectrum — heavy, light, or conditionally variable (ر and لله).
In Arabic, تَبَّ (he perished — light ب) sounds completely different from طَبَّ (he was skilled — heavy ط). Wrong weight = different word entirely. In Quranic recitation, even the same letter (ر) can change weight depending on its vowel — so learning this is non-negotiable for correct tilawah.
These 7 letters are called Huroof al-Isti'la (حروف الاستعلاء) — "letters of elevation" because the tongue elevates at the back. They are always pronounced thick, regardless of their vowel.
The remaining 21 letters are called Huroof al-Istifal (حروف الاستفال) — "letters of descent" — because the tongue stays low. They are always light, with one important exception: ر (which has special rules, covered next).
Ra (ر) is the most complex letter regarding Tafkheem. It is conditionally heavy or light — its weight depends entirely on its surrounding vowels and context.
Fatha / Damma → Heavy. | Kasra → Light. | Sukun → look at the letter BEFORE it. If preceded by Fatha/Damma → heavy. If preceded by Kasra → usually light (unless a heavy letter follows in the same word).
The most important special case in all of Tajweed. The word اللَّه changes its Lam weight depending on the vowel of the letter immediately before it.
Tap each card to reveal the weight and reason.
| Category | Letters | Weight | Condition |
|---|---|---|---|
| Isti'la (7) | خ ص ض غ ط ق ظ | Always Heavy | Always — no exceptions |
| Istifal (21) | All other letters | Always Light | Always — except ر (see below) |
| ر — Fatha/Damma | رَ / رُ | Heavy | Ra with Fatha or Damma → heavy |
| ر — Kasra | رِ | Light | Ra with Kasra → light |
| ر — Sukun | رْ | Depends | Heavy if preceded by Fatha/Damma; Light if preceded by Kasra |
| اللَّه — after Fatha/Damma | نَصْرُ اللَّه | Lam Heavy | Preceding vowel is Fatha or Damma |
| اللَّه — after Kasra | بِسْمِ اللَّه | Lam Light | Preceding vowel is Kasra |
Outstanding! You now command the full spectrum of Arabic sound weight. You know which letters are always heavy, which are always light, and the specific cases of Ra and the Name of Allah. Your pronunciation is level up!