Chapter 25 introduces the story of Damu Anna. Who was he and what is the stated purpose of telling his story?

According to Chapter 25, Damu Anna was a well-to-do, wealthy bronze-smith (Kasar) from Ahmednagar who was a devoted follower at Sai's feet. The purpose of narrating his story is to provide a clear example of Sai's love for His devotees. The text states that once one-pointed faith is established, Sai wards off all misfortunes and grants the desired objects of that devotee, removing their suffering. Damu Anna's story, though described as short, is presented as a pure and novel account that will fill listeners' hearts with joy and help their minds experience how the Guru-Mother is an "Ocean of Mercy."