What is the origin and purpose of the book 'Sai Satcharitra' as described in Chapter 52?

According to Chapter 52, the book, also called "Sai Leela," was written to remember the experiences Sai Baba gave to his devotees while he was in his physical body. The text describes it as a supremely holy work containing the stories of his true character. The chapter reveals that Sai himself chose Hemadpant to be the author, despite Hemadpant being devoid of specialized knowledge. It's emphasized that Sai held his hand and caused this true life story to be written. Furthermore, it is mentioned that the inspiration for the book came after Sai departed, based on the fame and stories he himself had narrated to his disciples.