How is Sai Baba's mercy illustrated in the introduction to Damu Anna's story in Chapter 25?

Chapter 25 introduces the story of Damu Anna specifically to illustrate Sai Baba's profound mercy and love for His devotees. The text explicitly states that the Guru-Mother is an "Ocean of Mercy" and that listening to this story will allow the reader's mind to experience this firsthand. It establishes a clear principle: when a devotee develops one-pointed faith, Sai responds by warding off their misfortunes, removing their suffering, and granting their desired objects. The narrative about Damu Anna is presented as a report or a case study to show this very principle in action, making it a powerful testament to Sai's compassionate nature.