What are the key events and philosophical points presented in the beginning of Chapter 20?

The initial part of Chapter 20 presents a mix of devotional praise and narrative setup. It begins with salutations, describing Sai Baba as a refuge who ends the cycle of rebirths and whose presence dispels worldly delusion. Philosophically, it notes that Baba is originally formless but took a physical form for his devotees. The chapter then paints a vivid picture of the post-Aarti scene in Shirdi, where Baba lovingly distributes Udi. Finally, it introduces the central story by recounting how Das Ganu, while writing a commentary on the Ishavasya Upanishad, faced a profound doubt and was directed by Baba to find the answer through a maidservant.