According to Chapter 52, why was the book "Sai Satcharitra" created, and who was chosen to author it?

Chapter 52 explains that the book, referred to as "Sai Leela," was written to remember the experiences Sai Baba gave to His devotees while He was in His physical body. It is described as a supremely holy text containing the stories of His true character. The chapter states that Sai Baba Himself chose Hemadpant to write this life story. Interestingly, it notes that Hemadpant was devoid of specialized knowledge and learning, but Sai Baba held his hand and caused the true life story to be written. The inspiration for the book is said to have come after Sai departed to His own abode, building upon the fame and profound stories He narrated with His own mouth during His lifetime.