How does Chapter 30 explain Sai Baba's nature, specifically his transition from being formless to having a form?

Chapter 30 of the Sri Sai Satcharita explains that Sai Baba's essential nature is formless, or 'Nirguni'. However, the text clarifies that He takes on a form with attributes, known as 'Saguni', as a direct response to the devotion of his followers. The chapter poetically states, "In the beginning, You reside as the formless (Nirguni). Then, through the qualities of devotees' devotion, You draw the formless into form with attributes (Saguni)." This teaching suggests that Sai's physical manifestation is an act of compassion, making the formless divine accessible to devotees who crave a tangible focus for their love and faith.