What specific events surrounding Sai Baba's final days and the planning for his tomb are mentioned in Chapter 43?

Chapter 43 provides a concise review of the events surrounding Sai's final moments and legacy. It mentions that as his end approached, Baba listened to the Ramayana being read by a Brahmin for his own benefit. It also recalls the donation made to Lakshmi, which was previously described. A key focus of this chapter is the planning for his Samadhi, or tomb, and it specifically highlights an event referred to as the unseen 'fall of the brick' which was connected to this planning. The chapter promises to narrate these events for the listeners with focused attention.