Can you summarize the introduction and key themes presented in Chapter 42 of the Sai Satcharitra?

Chapter 42 begins with traditional salutations to various deities and to Sadguru Sainath, who is described as the embodiment of Brahman and a Wish-fulfilling Tree for his devotees. The chapter recaps a previous story about Sai's portrait being miraculously protected from water and another devotee's desire being fulfilled through a dream. It sets the stage for discussing Sai's nature—whether his mind was intense or soft—and most significantly, for narrating the account of Baba leaving his physical body. The text emphasizes that remembering the Sadguru's feet removes the fear of worldly existence and dissolves all obstacles.