Why are the letters of Izhar the lettesr of Izhar ? On what basis are they categorized as the letters of Izhar/Idhar?
The letters of
are called thus because they cause the previous letter to be pronounced clearly. In the case of the
saakinah, when the letters pronounced from throat ,
is then pronounced clearly, which is what
means. Any other letter following the
saakinah besides these six letters of
cause a different rule to be used on the
saakinah, and it is not pronounced clearly then.
Please also see: www.abouttajweed.com/the-noon-saakinah-and-tanween/index.php
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