Can you summarize the key events and themes discussed in Chapter 42 of the Sai Satcharitra?

Chapter 42 of the Shri Sai Satcharitra serves as a prelude to the significant event of Sai Baba's Mahasamadhi. It begins with reverential salutations, describing Baba as the "Wish-fulfilling Tree" for his devotees. The chapter briefly recalls a past miracle where a portrait was protected from water and mentions how Baba appeared in a dream to another devotee. It emphasizes that by remembering the Sadguru's feet, worldly distress is removed. The primary focus, as stated in Chapter 42, is to describe Baba's nature and provide a detailed account of him leaving his body on Vijayadashami in the Shaka year 1840.