Who is Damu Anna, and for what purpose is his story introduced toward the end of the sections provided from Chapter 25?

Based on the introduction in Chapter 25, Damu Anna is identified as a wealthy Kasar (bronze-smith) from Ahmednagar who was a devoted follower of Sai Baba. His story is introduced to serve as a concrete example of Sai's love for His devotees and the power of faith. The chapter states that his tale will demonstrate how Sai wards off the misfortunes of those with one-pointed faith, removes their suffering, and grants their desires. The author explicitly mentions that listening to this "novel story" will show readers how the "Guru-Mother is an 'Ocean of Mercy'" and will help their own difficulties vanish.