that’s why “of what” is a big (grammatical) deal. The usual construction is “of god” (or their many variants) and the ustaz/ahs so particular always lecture lol because konon melayu dah salah. (Anyway the usual construction is Saifuddin or Saifullah if properlah)
ETA: Abdul is also a landmine since it’s servant/slave/subject of… So Abdul Shams would be seen as idolatrous (Shams is the sun)