What are the main topics discussed in Chapter 42 of the Sai Satcharitra?

Chapter 42 of the Sai Satcharitra serves as a pivotal chapter, beginning with customary salutations before briefly recapping the previous chapter's stories about Sai's portrait being saved from water and a devotee's dream. The text then transitions to its primary focus, which is a detailed and poignant account of Sai Baba leaving his physical body, an event known as his Mahasamadhi. As detailed in this chapter, it also reflects on the nature of the Guru's grace, explaining how remembering the Sadguru's feet can dissolve all obstacles and turn unhappiness into happiness.