Could you tell me about Damu Anna and his relationship with Sai Baba as described in the text?

According to Chapter 25, Damu Anna was a wealthy Kasar, or bronze-smith, from Ahmednagar who was a devout follower of Sai Baba. His story is presented as an example of Sai's love for His devotees. A key aspect of his devotion was his long-standing vow to provide one of the two large flags for the annual Ram Navami festival procession in Shirdi. Furthermore, the text highlights a significant personal blessing he received: despite having two wives, he was initially childless but was blessed with sons after receiving Sai's grace, demonstrating how Sai wards off misfortunes for those with faith.