What is the primary subject matter introduced in Chapter 42 of the Sai Satcharitra?

Chapter 42 of the Sai Satcharitra serves as a prelude to the profound event of Sai Baba leaving his mortal body. The chapter begins with invocations and praises, describing Sai as a 'Wish-fulfilling Tree (Kalpataru)'. As detailed in these passages from Chapter 42, after briefly recapping a prior miracle, the author explicitly directs the reader's attention, stating, 'Likewise, listen attentively to the account of Baba's leaving his body.' This sets a solemn tone, preparing the reader for the detailed description of Baba's Mahasamadhi, which is the central event foreshadowed and introduced in this chapter.