Can you explain the theological concept of Sai Baba transitioning from 'Nirguni' to 'Saguni' as detailed in Chapter 30?

Chapter 30 of the Sai Satcharitra presents a sophisticated theological idea about Sai Baba's divine nature. It states that fundamentally, Sai resides as 'Nirguni,' the formless, attributeless, and unmanifested divine principle. However, the chapter explains that 'through the qualities of devotees' devotion,' this formless reality is drawn into a 'Saguni' form—a form with attributes. This means the intense love, faith, and yearning of the devotees act as a force that compels the abstract divine to manifest in a tangible, physical form like that of Sai Baba, allowing them to interact with, serve, and directly experience the divine grace.