The place of inner assent and verbal profession is distinguished in the discussion of faith. Believing the truth in the heart and outwardly professing Islam each have their relevant implications.
The foundation of faith is distinguished from its perfection. Good deeds, reverence, and obedience concern its completeness and effects. Every sin should not automatically be equated with the disappearance of faith itself.
The duty to obey and avoid sin remains; distinguishing degrees of faith is not a permission to disobey.