Al-Mu'tasim
Literally derived from Arabic 'اعتصم', Al-Mu'tasim means 'one who seeks refuge' or 'one who takes protection', commonly understood as seeking protection in God.
No. Al-Mu'tasim as a proper name does not appear in the Quran; it is a classical Arabic epithet attested in historical sources, notably among Abbasid regnal names.
The most prominent bearer is the Abbasid caliph al-Mu'tasim bi'llah (commonly known as Al-Mu'tasim), attested in medieval Islamic historiography.
Pronounced approximately /muʕˈtasim/, often transliterated as Mu'tasim or Mutasim; the letter ʿ (ayn) occurs after the initial 'Mu'.
It is relatively rare in modern naming but used in scholarly, historical, or traditional families that favor classical Abbasid-era names.