Musulman or Mussulman: How To spell?
The word Musulman is misspelled against Mussulman, a noun meaning "A Mohammedan; a Moslem."
Mussulman has double "ss" is mispronounced as "s"Remember double 'SS' in between the strings mu & ulman which should not be misspelled with single 'S'
Wrong Spelling:  mu-s-ulman  Correct Spelling:  mu-ss-ulman 
Check more misspelled words of Mussulman to spell it correct.