Musulmans or Mussulmans: How To spell?
The word Musulmans is misspelled against Mussulmans, which is plural of "Mussulman"
Mussulmans has double "ss" is mispronounced as "s"Remember double 'SS' in between the strings mu & ulmans which should not be misspelled with single 'S'
Wrong Spelling:  mu-s-ulmans  Correct Spelling:  mu-ss-ulmans 
Check more misspelled words of Mussulmans to spell it correct.