Why does the author interrupt the main narrative to tell the story of how he was named 'Hemadpant'?

The author interrupts the main life story of Sai Baba to explain the origin of his name, 'Hemadpant,' for several reasons. As explained in Chapter 2, he does this to fulfill a promise he made to the listeners at the end of the first chapter. The author also feels it is an appropriate time to share this sub-story, as it was triggered by remembering Sai Baba's words, "Do not engage in dualistic explanations." He believes telling this story will satisfy the natural curiosity of readers who see the name "Hemadpant" at the end of every chapter. He assures the reader that this digression is also inspired by Sai and that the main sequence of Sai's life story will continue right after.