Abstract
Grammar is the best means to understand the meaning of the Glorious Quran. It is the law which protects the Arabic language and regulates its continuity. Linguistic vowels are one of the basics of Arabic grammar of letters. Arabic grammar devoted a considerable and highly systematic effort to this part of language. This study deals with the Arabic vowels in the grammatical works of Haji Awad and his predecessors, especially on the levels of singular, dual, and triple letters.
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