باب بَيَانِ الإِيمَانِ الَّذِي يُدْخَلُ بِهِ الْجَنَّةُ وَأَنَّ مَنْ تَمَسَّكَ بِمَا أُمِرَ بِهِ دَخَلَ الجَنَّةَChapter: Explaining the faith by means of which a person is admitted into paradise, and that the one who adheres to what is enjoined upon him will enter paradise