Can you explain the concepts of Nirguni and Saguni as presented in Chapter 30 in the context of Sai Baba?

Chapter 30 of the Sai Satcharitra introduces the philosophical concepts of Nirguni and Saguni to describe Sai Baba's divine nature. It states that 'In the beginning, You reside as the formless (Nirguni).' This refers to the Absolute, attributeless, and unmanifested aspect of God. However, the chapter immediately explains that through the 'qualities of devotees' devotion, You draw the formless into form with attributes (Saguni).' This Saguni aspect is the manifested, personal form of God with qualities that devotees can perceive and interact with. Therefore, this chapter presents Sai Baba's physical form as a compassionate manifestation of the formless divine, made accessible for the sake of His devotees.