This document discusses religious innovation (bid'ah) in Islam. It begins by defining key religious terms in Arabic like Rubb, Deen, and the phrase "Sallallaaho 'alaihi wa sallam". It then discusses how religious matters must be accepted without doubt based on Quranic verses and hadith. It notes that innovating new matters in religion that are not part of Islam leads people astray and to hell. The document categorizes people who practice innovation into three groups - those who do so out of ignorance, those who do so for material gain, and enemies of Islam who try to divide Muslims. It warns that innovation is a method used by Satan to misguide people away from true faith