What personal challenges did Damu Anna face, and how were they resolved according to the text?

According to the account in Chapter 25, Damu Anna faced the significant personal challenge of being childless, even though he had two wives. The text clearly states that this difficult situation was resolved by receiving Sai Baba's blessings, after which he was blessed with the birth of sons. This event is presented as a direct testament to Sai's power to grant the desired objects of His devotees and remove their suffering. The narrative frames this blessing as a result of his sincere devotion, which was also demonstrated through his unwavering vow to provide a flag for the Ram Navami festival procession in Shirdi.