of y sound origin (ذَوَاتُ الْيَاءِ)
علوم القرآن
التعريف :
The final vowel ā sound that is originally ī. In nouns, they are identified in the dual form of the noun, such as mawlā, mawlayān, and in verbs by adding the first-person singular pronoun, as in qaḍā, qaḍaytu. Such vowels may become a diphthong.