Al-Shaykh al-Mufid
Abu 'Abd Allah Muhammad ibn Muhammad ibn al-Nu'man ibn 'Abd al-Salam al-'Ukbari al-Baghdadi (Arabic: أَبُو عَبْدِ ٱللّٰهِ مُحَمَّدُ بْنُ مُحَمَّدٍ بْنِ ٱلنُّعْمَانِ بْنِ عَبْدِ ٱلسَّلَامِ ٱلْحَارِثِيُّ ٱلْعُكْبَرِيُّ ٱلْبَغْدَادِيُّ), known as al-Shaykh al-Mufid (Arabic: الشیخ المفید) and Ibn al-Mu'allim (c. 948–1022 CE), was a prominent Twelver Shia Muslim scholar, jurist (faqīh) and theologian of Iraqi descent.