Why does the author pause the main narrative to explain the origin of his name, 'Hemadpant'?

The author pauses the main narrative to explain the origin of the name 'Hemadpant' primarily to satisfy the reader's curiosity and to fulfill a promise. As explained in Chapter 2, the author notes that since every chapter ends with the line "Composed by the devotee Hemadpant," a doubt about who this person is would naturally arise in the listeners' minds. He also recalls making a promise at the end of the first chapter to tell this story. Believing this digression to be an inspiration from Sai, he decides it is appropriate to share this sub-story before continuing with the main sequence of Sai Baba's life.