The Idaafa

The Idaafa (revisited). Arabic grammar does not allow anything to be placed between the first and second term of Idaafa except for a demonstrative pronoun. Therefore,

             (a) the student’s book               کتابُ الطالبةِ

            is correct and

             (b) this student’s book       کتابُ هذهِ الطالبةِ

            is also correct.  But,

            (c)                                            کتابُها الطالبةِ

is incorrect due to the fact that the possessive pronoun ( ـها ) is inserted between  

the first and second terms of Idaafa.