Qaraʾtu kitāba aṭ-ṭālibi al-jadīda: the accusative adjective modifies the book, not the genitive student. Contrast al-jadīdi, which would modify the student.
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An Adjective Can Modify the Construct Head
Choosing the Correct Parsing: Meaning, Governance and Context
Qaraʾtu kitāba aṭ-ṭālibi al-jadīda: the accusative adjective modifies the book, not the genitive student. Contrast al-jadīdi, which would modify the student.