Describe the miraculous event involving the Dhangar woman that revealed Baba's omniscience to Sapatnekar.

The miracle occurred when Sapatnekar, in a moment of desperation, grabbed Sai Baba's feet. As narrated in Chapter 48, a Dhangar (shepherd) woman arrived and began massaging Baba's waist, and Baba started a conversation with her. As Sapatnekar listened, he was shocked to realize that every word of the conversation was actually his own life story. Baba was recounting Sapatnekar's entire biography, from birth and even mentioning the tragic death of his late son. Although the story was ostensibly being told to the woman, it was a direct and miraculous communication to Sapatnekar, proving Baba's all-knowing nature and leaving the devotee in a state of wonder.