Can you explain the transition from 'Nirguni' to 'Saguni' as described in Chapter 30 of the Sai Satcharitra?

In Chapter 30, a profound metaphysical concept about Sai Baba's divine nature is presented. The text explains that Sai initially resides in a formless, unmanifested state known as 'Nirguni.' However, it is through the power and quality of a devotee's pure devotion that the formless is drawn into a form with attributes, or 'Saguni.' This transformation from the abstract to the tangible is a direct response to the devotee's faith and love. According to the descriptions in Chapter 30, this ability to manifest in a perceivable form for the sake of his followers is a key characteristic that establishes Sai Nath as the 'crest-jewel among saints,' showcasing his deep connection to his devotees.