How does the author of the Sai Satcharitra describe his role and Sai Baba's influence in the process of writing the book, according to Chapter 49?

In Chapter 49, the author presents himself merely as an instrument for a divine task orchestrated by Sai Baba. He states that Sai Baba is the true composer and writer of the Satcharita, and without His inspiration, the work would be devoid of substance. The author recounts that if he ever forgot the narrative, Baba would provide the remembrance at the perfect moment. He even explains that his own will was secondary; if he tried to rest, an unexpected story would manifest, compelling him to pick up his pen. The text explicitly mentions that the merciful Sainath entered the author's mind to get His own book written, thereby fulfilling the author's spiritual desires as well.