How did the world come into being from Brahman according to this philosophy?

Chapter 50 describes a specific cosmological sequence for the creation of the world. It begins with Brahman becoming 'qualified' (shabal) by Avidya (ignorance), which allows it to be expressed as 'Sat' (Existence). From this expressible Brahman, the Unmanifest (Avyakta) emerged. Following that, the Great Principle (Mahat-tattva) arose from the Unmanifest, and egoism was born from it. The process continued with the five Tanmatras (subtle elements) forming within the ego, and the five great elements (gross elements) forming within them. Ultimately, the text states that the world was born from the womb of these five great elements, and the vision of this world is itself the form of Avidya-Maya.