How does the author of the Sai Satcharitra introduce Damu Anna's story and what does he want readers to learn from it?

The author introduces the story of Damu Anna in Chapter 25 as a prime example of how Sai Baba protects a devotee once 'one-pointed faith is established.' He frames the narrative as a 'report that shows Sai's love for His devotees' and promises that listening to this 'novel story' with reverence will fill the listener's heart with joy. The author urges the reader to pay close attention, assuring them that their difficulties will vanish. The intended lesson is for the reader's mind to experience how the 'Guru-Mother is an Ocean of Mercy,' thereby reinforcing faith in Sai's power to grant desires and remove suffering.