وتمهيد القواعد والأصول، وترتيب الأبواب والفصول
The principles and rules were laid down, and the material arranged into chapters and sections.
A qāʿidah summarizes a rule applicable across related questions. A bāb groups a major subject; a faṣl treats a particular aspect within it. Organization allows a question to be examined together with its definitions, arguments and exceptions rather than as an isolated answer.
For example, the discussion of divine unity may be divided into the meaning of oneness, competing conceptions and their supporting or opposing arguments. A structured arrangement makes study and later reference easier.