How does Chapter 20 describe Sai Baba's essential nature and form?

In Chapter 20 of the Sai Satcharitra, Sai Baba is described in profound, metaphysical terms. The text states that Sai is "originally formless" but chose to take on a physical form for the sake of his devotees, much like an actor playing a role. This chapter also portrays him as a "Siddhashram," an abode of the perfected, whose mere sight is enough to relieve the fatigue of worldly life and dispel the delusions of existence for those close to him. He is presented as a refuge who can end the cycle of rebirths by giving devotees the shelter of eternal rest.