assalamo alaykom
we know Shia read the same quran, but they have wrong akidah.
the problem is akidah is everything if you have a wrong akidah you have a wrong faith
the muslim will become 73 group just one will go to junnah,
قال صلى الله عليه وسلم : " إن بني إسرائيل افترقوا على إحدى...