What was the primary inspiration and purpose for writing the Shri Sai Satcharitra, as explained in Chapter 40?

Chapter 40 explains that the root inspiration for the book was a strong desire to describe Sai Baba's divine deeds, such as the grinding of grain, with the belief that recounting these stories would destroy impurities and sins. The chapter supports this idea by noting that God is even more pleased when one sings the praises of His devotees than of Himself, a concept found in the Bhavishyottara Purana. Ultimately, the text presents the entire composition as Sai's own inspiration, approved by Him for the ultimate welfare of the devotees, with Sai Himself being the one who performs His own story.