Harakat Huruf al-Mudara'a

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Editions
Majallat al-Jami'ah al-Islamiyyah bi-al-Madinah al-Munawwarah

Harakat Huruf al-Mudara'a (The Vocalization of the Imperfect Prefixes) is a linguistic and grammatical treatise by the Saudi scholar Abd Allah ibn Nasir al-Qarni, published in 1423 AH (2002 CE) in the Journal of the Islamic University of Madinah. The work investigates the phonetic and morphological rules governing the short vowel markings (harakat) assigned to the four prefix letters that introduce the imperfect verb in Arabic.

Scope and Core Rules

The treatise focuses on the four prefix letters of the imperfect verb—hamza, nun, ta', and ya'—which grammarians term the "four additions" (al-zawa'id al-arba'). Al-Qarni outlines the standard morphological rules documented by classical grammarians:

  • Damma (Vocalization with u): Applied when the corresponding past tense (madi) consists of four letters, whether inherently quadriliteral or derived through augmentative letters (such as akrama becoming yukrimu, or dahraja becoming yudahriju).
  • Fatha (Vocalization with a): Applied when the past tense is triliteral (three letters), quinqueliteral (five letters), or sexiliteral (six letters), such as daraba becoming yadribu and istagfara becoming yastagfiru.

Al-Qarni records the classical grammarians' explanations for this division: because triliteral verbs are far more numerous than quadriliteral ones, they were assigned the lightest vowel (fatha) to balance phonetic frequency, whereas heavier four-letter bases took damma. Five- and six-letter verbs were likewise given fatha because combining their length with a damma would create excessive phonetic heaviness.

Dialectal Variations and Kasr

A central portion of the study is devoted to the non-standard phenomenon of kasr (vocalizing the imperfect prefix with i), an issue treated extensively by early authorities such as Sibawayh. While the dialect of the Hijaz adhered to fatha on triliteral verbs—serving as the basis for standard grammatical codification—several classical tribes (including Tamim, Qays, and Asad) regularly applied kasr to the prefixes hamza, ta', and nun in verbs following the fa'ila - yaf'alu pattern (e.g., ti'lam, i'lam, and ni'lam). This kasra served as a phonetic indicator of the broken medial radical in the past tense. However, kasr was avoided in verbs whose imperfect form follows the pattern yaf'ilu, so as not to cause consecutive kasras in the same word.

The author examines related non-canonical Quranic recitations (qira'at) and rare transmitted usages, such as the reading attributed to Yahya ibn Waththab and al-A'mash of نَسْتَعِينُ with a kasra on the nun (nista'in), and Abu Raja' al-'Utaridi's reading of فَاتَّبِعُونِي يُحْبِبْكُمُ اللَّهُ with a fatha on the ya' (yahbibkum).

Findings

In his conclusions, al-Qarni emphasizes several key points:

  • Vocalizing the imperfect prefix with kasra is an authentic classical dialectal feature, governed by consistent phonological rules and attested in ancient prose and poetry.
  • Although standard Classical Arabic grammar adheres to the Hijazi dialect as the broadest in transmission and strongest in systematic analogy (qiyas), speakers who employ kasr cannot be dismissed as grammatically incorrect because their usage is supported by strong auditory transmission (sama').
  • The practice of prefix kasr remains prevalent across numerous modern spoken Arabic vernaculars (such as yil'ab or yisafir), representing a continuous linguistic lineage from ancient tribal dialects.

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