Al-Qa'im

Abū Ja'far Abdallah ibn Aḥmad al-Qādir, better known by his regnal name al-Qā'im bi-amri 'llāh or simply as al-Qā'im; 8 November 1001 – 3 April 1075), was the Abbasid caliph in Baghdad from 1031 to 1075. He was the son of the previous caliph, al-Qadir. Al-Qa'im's reign coincided with the end of the Buyid dynasty's dominance of the caliphate and the rise of the Seljuk dynasty.