What was the primary source of sorrow for the wealthy Parsi merchant, Ratanji, and what advice did Das Ganu give him?

The primary source of sorrow for the wealthy Parsi merchant Ratanji was that he did not have a son. Despite having vast wealth, property, and a generous nature, he was father to twelve daughters, which made his happiness feel fruitless. As detailed in Chapter 14, this inner worry caused him constant sadness and unease. Upon revealing this secret to Das Ganu, he was advised to go to Shirdi to seek the darshan of Sai Baba. Ganu assured him that if he surrendered to Baba and told him his story, he would be blessed and his heart's desire would be fulfilled.