How did Sai Baba uniquely reveal Sapatnekar's life story to him?

Sai Baba revealed his omniscience to Sapatnekar in a miraculous and indirect way. As narrated in Chapter 48, Sapatnekar, feeling distressed, decided to approach Baba when He was alone. As he was massaging Baba's feet, a Dhangar (shepherd) woman arrived and sat to rub Baba's waist. Baba then began a conversation with her. Sapatnekar listened carefully and was shocked to find that every word of the conversation was his own life story. Though the tale was ostensibly about a merchant, it was Sapatnekar's own biography, even mentioning the death of his son. Hearing his personal history from Sai's mouth filled Sapatnekar with wonder and deep respect.