How did Sai Baba demonstrate his omniscience to Cholkar?

Sai Baba provided a profound and personal demonstration of his omniscience to Cholkar. According to Chapter 15, after Cholkar had fulfilled his long-delayed vow and was visiting with another devotee named Jog, Baba gave a very specific instruction. As Cholkar was about to leave, Baba told Jog, 'Give him cups of tea, well-filled with sugar.' This seemingly simple command was deeply meaningful, as only Cholkar knew he had secretly given up sugar as a penance for delaying his pilgrimage. This moment astounded Cholkar, bringing tears to his eyes, as it confirmed that Baba was aware of his vow, the financial struggles causing the delay, and his private sacrifice. Baba later explicitly stated, 'Though you kept these secret, all of it is known to me.'