Based on the introduction to his story, can you describe Damu Anna's personal challenges and how Sai Baba intervened?

The introductory passages in Chapter 25 highlight a significant personal challenge faced by Damu Anna. Despite being a well-to-do individual with two wives, he was childless. The text explicitly states that it was by receiving Sai Baba's blessings that he was eventually blessed with sons. This is presented as a direct example of the principle that when a devotee establishes one-pointed faith, Sai wards off their misfortunes and grants their desired objects. Damu Anna's story is used to illustrate Sai's readiness to protect his devotees and remove their suffering, showing how his faith was rewarded with the gift of children.