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

Chapter 30 of the Sai Satcharitra explains a profound spiritual concept regarding Sai Baba's manifestation. It states that in the beginning, Sai resides as the formless, or 'Nirguni'. However, it is through the qualities of devotees' pure devotion that He is drawn from this formless state into a form with attributes, or 'Saguni'. This teaching highlights that the formless divine takes on a perceivable, tangible form for the sake of the devotees, responding directly to their love and faith. As the chapter says, "through the qualities of devotees' devotion, You draw the formless into form with attributes."