<page_title> At-Ta'i </page_title> <section_title> References </section_title> <table> <cell> Caliph of Islam Abbasid Caliph 974 – 991 <col_header> Sunni Islam titles </col_header> </cell> </table>
After holding the office for seventeen years, aṭ-Ṭaʼiʻ was deposed in 991.