According to Chapter 52, who was chosen to write the "Sai Leela" and what was the source of its inspiration?

Chapter 52 explains that Sai Baba himself caused the "Sai Leela" to be written. He chose Hemadpant, who is described as being devoid of specialized knowledge and learning, and held his hand to guide the writing of this true life story. The chapter also notes that some of the inspiration for the book came from the fame and profound stories that Sai narrated with his own mouth for his disciples to hear, with the formal inspiration for the book arising after he departed to his own abode.