How does the author of the Sai Satcharitra describe the book itself and the purpose of telling Damu Anna's story?

The author describes the Shri Sai Satcharitra as a work he was empowered to write through Sai's grace, which gave his meager intellect courage and special knowledge. Chapter 25 refers to the book as a "Shed of Nectar-like Sai Stories" and a "Moonstone (Somakant) from which the lunar nectar of Sai's tales flows," meant for devotees to enjoy and ward off worldly troubles. The story of Damu Anna is introduced as a short but very pure tale that demonstrates Sai's love and readiness to protect His devotees. The author encourages listeners to give their attention to this story to understand how the Guru-Mother is an "Ocean of Mercy."