Who is Damu Anna as introduced in Chapter 25, and what is the stated purpose of including his story?

As introduced in Chapter 25, Damu Anna is a wealthy Kasar (bronze-smith) from Ahmednagar who is described as a devotee devoted to Sai Baba's feet. His story is introduced to serve as a specific example of a core principle discussed in the chapter: that Sai Baba protects his devotees and removes their suffering once they establish "one-pointed faith." The author presents Damu Anna's narrative as a "novel story" that will fill the listeners' hearts with joy and demonstrate how the "Guru-Mother is an 'Ocean of Mercy.'" Thus, his story is meant to be a practical illustration of Sai's love and power.