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

The author pauses the main life story of Sai to explain the origin of his name "Hemadpant" for a specific reason, which he clarifies in Chapter 2. He notes that at the end of every chapter, the book is attributed as "Composed by the devotee Hemadpant." This naturally raises the reader's curiosity about who "Pant" is. To satisfy this curiosity and keep a promise made in the previous chapter, he presents this sub-story. He assures the listener that this digression is also Sai’s inspiration and that listening to it will reveal its appropriateness before the main sequence of Sai's life story continues.