Based on the provided text, what was the author's stated purpose and motivation for writing about the Chavadi?

The author presents his motivation for describing the Chavadi as a response to the audience's eagerness to hear the "sweet story." In Chapter 37, he acknowledges this anticipation and promises to narrate the details of the Chavadi, the Handi, and the Prasad. He approaches this task with great humility, calling himself a "poor man of dull intellect" and asserting that Sai Baba himself is the true source of the inspiration and intellect required for the writing. He states, "He himself is the teller of His story and the one who makes it be written." Thus, his purpose is to fulfill a promise to his readers while acting as a humble instrument for Sai to narrate His own life-story.