What core principle is the story of Damu Anna intended to illustrate about Sai Baba's relationship with his followers?

The introduction to Damu Anna's story in Chapter 25 explicitly states the principle it aims to illustrate. The central tenet is that once a devotee establishes unwavering, one-pointed faith in Sai Baba, He actively intervenes in their life to ward off all misfortunes, remove their suffering, and grant their righteous desires. The narrative is presented as a "report that shows Sai's love for His devotees" and a way for the reader to understand how the Guru-Mother is an "Ocean of Mercy." By sharing this story, as Chapter 25 indicates, the author intends to show Sai Baba's readiness to protect those who are truly devoted to him, making it a lesson in the power of faith.