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

According to the text in Chapter 25, Damu Anna is a wealthy Kasar (bronze-smith) from Ahmednagar who is a devotee of Sai Baba. His story is introduced as a prime example of Sai's love and mercy towards those with one-pointed faith. The significance of his narrative is to illustrate a core teaching presented in this chapter: when a devotee has unshakable faith, Sai Baba protects them from all misfortunes, removes their suffering, and fulfills their desires. The chapter presents his story as a "novel story" that will fill the listeners' hearts with joy and help them understand how Sai, the "Guru-Mother," is an "Ocean of Mercy."