What advice did Das Ganu give to Ratanji, and what was the result of this advice?

When the wealthy Parsi merchant Ratanji was overcome with sadness about not having a son, he confided in Das Ganu, in whom he had great faith. As detailed in Chapter 14, Das Ganu advised him to travel to Shirdi to seek the blessings of Sai Baba. Ganu instructed Ratanji to take Baba's darshan, bow at His feet, and explain his problem from the beginning, assuring him that Baba's power was inconceivable and that surrendering to Him would lead to the fulfillment of his heart's desire. Ratanji found this idea appealing, resolved to go, and subsequently traveled to Shirdi, where he went to the Masjid to meet Sai Baba.