Based on Chapter 52, who was chosen to write the Sai Satcharitra and what was the source of its stories?

Chapter 52 clearly states that Hemadpant was the individual chosen to write the true life story of Sai Baba. It emphasizes that Sai Himself guided this process, holding Hemadpant's hand and causing the book to be written, even though Hemadpant felt he lacked specialized learning. The source of the content, as detailed in this chapter, came partly from Sai Baba Himself, who narrated some of His own fame for the disciples to hear. The inspiration to compile these narratives into the book came after Sai Baba had departed to His own abode.