The clarity and completeness of the divine revelation

إِلَّا بَلَـٰغًا مِّنَ ٱللَّهِ وَرِسَـٰلَـٰتِهِۦ ۚ وَمَن يَعْصِ ٱللَّهَ وَرَسُولَهُۥ فَإِنَّ لَهُۥ نَارَ جَهَنَّمَ خَـٰلِدِينَ فِيهَآ أَبَدًا

But [I have for you] only notification from Allāh, and His messages." And whoever disobeys Allāh and His Messenger - then indeed, for him is the fire of Hell; they will abide therein forever.