Can you provide a summary of the topics introduced in Chapter 43 of the Shri Sai Satcharitra?

Chapter 43 serves as an introduction to several key events surrounding Sai Baba's final days and his spiritual state. The text outlines that the chapter will narrate how Sai listened to the Ramayana before his passing and how the planning for his Samadhi, or tomb, took place, including the incident of the 'fall of the brick'. As described in Chapter 43, it will also recount a past event where Baba appeared to have left his body for three days, leading people to prepare for his final rites, only for him to suddenly return. The author also reflects on how the passing of saints purifies both listeners and speakers.