How does Chapter 20 describe Sai Baba's fundamental nature and his reason for taking a physical form?

In Chapter 20, it is explained that Sai Baba is originally formless but took on a physical form for the sake of his devotees. The text poetically describes this by stating that he accepted the role of the actress "Maya" and played his part like an actor in the world. This act of taking a form was a manifestation of his grace, as his physical sight relieved the fatigue of worldly life, and his constant presence had the power to drive away the delusion of existence for those who were close to him.