فِي جَمِيعِ مَا عُلِمَ بِالضَّرُورَةِ مَجِيئُهُ بِهِ مِنْ عِنْدِ اللَّهِ تَعَالَى
Concerning everything decisively known to have been brought from Allah.
Here known necessarily does not mean that every religious proposition is self-evident in formal logic. It identifies teachings whose attribution to the Prophet ﷺ is decisive and publicly established. Other subtle questions require interpretation or inference.
A willful denial of a decisively established religious tenet is therefore not simply equated with a mistaken position in a difficult inferential dispute. The distinction matters both to defining faith and to judging individual cases.