Mumin or Momin (Arabic: مؤمن, romanized: muʾmin; feminine مؤمنة muʾmina) is an Arabic Islamic term, frequently referenced in the Quran, meaning "believer". It denotes a person who has complete submission to the Will of Allah and has faith firmly established in his heart, i.e. a "faithful Muslim".
A Muslim is someone who practices the laws of Islam and has no emnity towards the Ahl al-Bayt (as). A mu'min is someone who has ma'rifah of the station of the Ahl al-Bayt (as) and whose heart is open to the esoteric knowledge that they teach. Both can go to Heaven.