According to Chapter 52, what was the purpose of creating the book 'Sai Leela' and who was chosen to author it?

Chapter 52 provides a retrospective review, explaining that the book "Sai Leela," or Satcharitra, was written to remember the experiences Sai Baba gave to His devotees while He was in the body. The text describes this work as supremely holy and a source of enlightenment for this world and the next. It is highlighted in this chapter that despite having countless followers, Sai Baba specifically chose Hemadpant, who was described as being devoid of specialized knowledge, to be the instrument for this work. The chapter poetically states that Sai held his hand and caused this true life story to be written.