Who advised the merchant Ratanji to go to Shirdi, and in which chapter is this event described?

The person who advised the merchant Ratanji to visit Shirdi was Das Ganu. This event is described in Chapter 14. Ratanji, who was constantly sad and uneasy because he had no son, had great faith in Das Ganu and revealed the secret of his heart to him. In response, Das Ganu told him, 'Go to Shirdi; you will obtain your heart's desire.' As Chapter 14 recounts, Das Ganu instructed Ratanji to take Baba's darshan, bow at His feet, and explain his problem, assuring him that Baba's handiwork is inconceivable and that by surrendering to Him, he would be fulfilled.