How did the author of the Shri Sai Charitra justify writing the book despite feeling unqualified?

The author of the Shri Sai Charitra, despite considering himself an "ignorant person" lacking authority and knowledge, felt he could write the book because he believed he was acting on a divine command from Sai Baba. Chapter 25 explains that the author felt Sai Himself inspired him and "made me write the book with my own hands to awaken His own devotees." He attributes his ability to undertake the project to this inspiration, stating that at the moment of Sai's command, his "meager intellect became endowed with courage and special knowledge." He saw the book not as his own creation but as the grace and "Prasad" of Sai's feet.