Aside from the main story about Devidas, what other topics does Chapter 5 of the Sai Satcharitra introduce or foreshadow for future discussion?

Chapter 5 concludes by setting the stage for future narratives. After crediting the great devotee Mahalsapati with relating the story of the Guru and disciple, the chapter promises that the subsequent stories are even more profound. It explicitly mentions several topics that will be narrated later, including the original condition of the mosque in Shirdi, the difficulty encountered while paving its floor, and the enduring mystery of whether Sai Baba was of Hindu or Muslim lineage. Furthermore, as Chapter 5 explains, future sections will describe Baba's practice of Khanda-yoga and how he took on the sufferings of his devotees by performing acts like washing clothes and grinding.