In Arabic the vowel signs َ- ِ- ُ- are called Haarakah (movement) - A letter having a vowel sign is called Mutaharrik حَرْفٌ مُتَحَرِّكٌ (moved). If a letter is without a vowel sign, it is called saakin سُكونٌ (resting) which is indicated by ْ- sign (Sukoon - jazm). When there is a letter with any short vowel sign and the next letter has a sukoon sign then the both letters will jointly produce a single (syllable) uninterrupted sound. You will also learn in next lessons that Tanween sign ً- ٍ- ٌ- and Tashdid sign ّ-

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