In Chapter 49, how does the author explain his motivation for writing the Satcharita and who does he credit for its creation?

The author explains in Chapter 49 that his motivation was to share the bliss of Sai's stories, comparing them to a feast of 'sweet delicacies' that one cannot enjoy alone. He felt that sharing this joy with other listeners would double the bliss. However, he gives the ultimate credit for the work to Sai Baba Himself. He states that Sai prompted him to start the Satcharita for the benefit of devotees and for the author's own self-interest. He firmly believes that without Sai's divine inspiration, the book would be mere 'dryness at every step,' concluding that 'He Himself is the composer and the writer.'