Could you elaborate on the vow taken by Damodar Savlaram and the reasons behind it?

The vow taken by Damodar Savlaram, also called Damu Shet Kasar, was a direct result of a profound personal blessing. As Chapter 0 clarifies, Damu Shet was childless and very unhappy. Acting on a suggestion, he sought out Maharaj, who gave him a blessing that resulted in the birth of a son. This miracle established his unwavering faith. To express his gratitude, he took a specific vow which, according to the text, is still ongoing. The vow consisted of two parts: bringing a new flag for the Ram Navami procession each year, and providing food for all the Fakirs gathered in the area on that day.