brother, these 51 things and more are listed in books of fiqh and aqida that denying these things wil throw u from islam why are these labeled fundamentals? usoool..for a reason lets take few from the list like Prohibition of alcohol if a person says alcohol is not haram, can u stil regard him muslim? or Finality of the Prophethood if someone denys that, is he a muslim? Existence of Angels? u tel me? similary u can go thru each # on list.. these things are either proven from a. clear verses of the Qur’an b. al-sunnah al-mutawatirah (mass-transmitted narrations c. absolute consensus (ijma’ qat’i