Based on the provided text, what personal hardship did Damu Anna face, and how was it resolved?

The introduction to Damu Anna's story in Chapter 25 highlights a significant personal challenge he faced. Although he was a wealthy man and had two wives, he was childless. This situation is presented as a form of suffering that was ultimately alleviated through his devotion to Sai Baba. The text explicitly states, "By receiving Sai's blessings, he was blessed with sons." This resolution serves as a key example of the chapter's opening statement that Sai wards off the misfortunes of his devotees and grants their desired objects, showcasing how the Guru-Mother acts as an "Ocean of Mercy" for those with one-pointed faith.