المُضَاعَف — Doubled (Geminate) Verbs
Muda'af (مُضَاعَف, "doubled") verbs are verbs in which the second and third root letters are identical. Because two identical consonants come together, idghām (assimilation) applies: the two letters merge into one letter with a shadda.
Muda'af verbs are not weak (muʿtall) verbs. Their root letters are all consonants — it is the doubling that creates morphological complexity.
Examples
| Root | Unassimilated | After Idghām | Meaning |
|---|---|---|---|
| غ-ض-ض | غَضَضَ | غَضَّ | to lower, to subdue |
| ح-ل-ل | حَلَلَ | حَلَّ | to untie, to be permissible |
| م-ر-ر | مَرَرَ | مَرَّ | to pass by |
The Imperative (أَمر) Problem
Standard imperative formation: 1. Drop the ḥarf al-muḍāraʿah (يـ) 2. Give the last letter a sukūn 3. Add hamzat al-waṣl if needed to begin the word
For muda'af verbs, step 2 creates a problem: the idghām already contains a hidden sukūn (the first of the two merged letters). Adding another sukūn causes iltiqāʾ al-sākinayn (two sukūns colliding) — impermissible.
Two Valid Solutions
| Solution | Process | Result (from غَضَّ) | Result (from حَلَّ) |
|---|---|---|---|
| Keep idghām + fataḥ | Give the merged letter a fataḥ instead of sukūn | اُغُضَّ | حُلَّ |
| Break the idghām | Revert to original unmerged form, apply standard amer rules | اِغضِض | اِحلُل |
Both Forms Are Equally Correct
There is no condition or preference between the two forms. Choose freely based on comfort. The Quran uses both patterns in different places.
The Fataḥ Is Not Iʿrāb
In the "keep idghām" solution, the fataḥ on the final letter does NOT indicate manṣūb. It is purely phonological — given to avoid the iltiqāʾ al-sākinayn. This applies only in the imperative (amer) form of muda'af verbs.
Verb غَضَّ / يَغُضُّ in the Quran
The verb غَضَّ (to lower, to subdue) appears in two contexts:
| Usage | Construction | Meaning |
|---|---|---|
| With direct mafʿūl | يَغُضُّونَ أَصوَاتَهُم | they lower their voices |
| With preposition مِن | يَغُضُّ مِن بَصَرِه | he lowers his gaze (Sūrah Al-Nūr) |
Both constructions are valid.
Connection to Phonetic Harmony
The idghām in muda'af verbs follows the same phonological rule (iltiqāʾ al-sākinayn avoidance) that governs tajweed. In classical Arabic, tajweed rules were simply the natural speech patterns of Arabs — not a special layer applied only to Quran recitation.
Examples from the Quran
| Āyah | Form | Analysis |
|---|---|---|
| يَغُضُّونَ أَصوَاتَهُم (Al-Ḥujurāt 49:3) | muḍāriʿ jamʿ | they subdue their voices; root غ-ض-ض |
Session References
- Surah Al-Hujuraat Session 4: Definition and classification of muda'af; two amer forms demonstrated with غَضَّ and حَلَّ; application in 49:3 (يَغُضُّونَ).