According to Chapter 30, how is Sai Baba's nature described, and what causes Him to manifest from a formless state to one with attributes?

Chapter 30 of the Sai Satcharita describes Sai Baba as the 'Karuṇālaya,' an abode of mercy whose darshan dispels the fear of worldly existence. The text explains that He initially resides in a formless state, referred to as Nirguni. However, it is through the profound qualities of his devotees' devotion that He is drawn from this abstract state into a tangible form with attributes, or Saguni. This chapter emphasizes that for saints like Sai Nath, who is called the crest-jewel among saints, the duty of uplifting their devotees is an essential and unavoidable task they must perform.