What is the stated purpose of telling Damu Anna's story in the Shri Sai Satcharitra?

The story of Damu Anna is included in the Shri Sai Satcharitra to illustrate a key principle: once one-pointed faith is established in Sai, He protects the devotee from all misfortunes and grants their wishes. As mentioned in Chapter 25, the author introduces this narrative to show Sai's readiness to protect His followers and to fill the hearts of listeners with joy. The story, though brief, is described as "very pure in its meaning" and is intended to help the reader experience how the Guru is an "Ocean of Mercy." Listening to such holy stories is said to burn away the sins of the age and alleviate worldly difficulties.