Bayna Abī al-ʻAlāʼ al-Maʻarrī wa-dāʻī al-duʻāh al-Fāṭimī

Abū al-ʻAlāʼ al-Maʻarrī, Muʼayyad fī al-Dīn Hibat Allāh ibn Mūsá