How did Sai Baba prove to Cholkar that He was aware of his secret actions and thoughts?

Sai Baba demonstrated his divine knowledge to Cholkar in a deeply personal and miraculous way. As detailed in Chapter 15, after Cholkar had finally fulfilled his long-delayed vow to distribute sugar, he went to have Baba's darshan. At that very moment, Baba, who did not drink tea himself, instructed Cholkar's host, Jog, to "Give him cups of tea, well-filled with sugar." This specific instruction was profoundly meaningful because Cholkar had secretly given up sugar as a penance during the delay. This act showed Cholkar that Baba knew not only about the public vow but also about his private sacrifice, confirming that Baba is with His devotees and knows their hearts instantly, no matter the distance.