Sakin Ya"

When a letter has the diacritical mark Sukun over it, it is pronounced with no following vowel. For example,

[ مِن ] with Sukun over Nun [ ن ] is pronounced "min", while [ مِنَ ] with Fathah over Nun [ ن ] is pronounced "mina".

[ ي ] preceded by a letter having a Kasrah [ ِ ] is lengthened as in [ بِينَ ] [bina]. In this case, [ ي ] is written without any diacritical marks.

On the other hand, when the letter [ ي ] has a Sukun over it and the preceding letter has a Fathah [ َ ], the vowel is pronounced as two vowels run together as in the English word "buy".

Instructor’s explanation