How did Sai Baba prove to Cholkar that He knew about his secret renunciation of sugar?

Sai Baba's omniscience is powerfully demonstrated in the story of Cholkar. As Chapter 15 narrates, after Cholkar had finally arrived in Shirdi and fulfilled his vow by distributing sugar, he was visiting with Mr. Jog. At this moment, Baba provided undeniable proof that He knew about Cholkar's secret sacrifice. Baba, who did not drink tea Himself, specifically called out to Jog and said, "Give him cups of tea, well-filled with sugar." Hearing these meaningful words, Cholkar was completely amazed and overwhelmed with emotion, as he understood the profound implication. This was Baba's way of showing that He was aware of the entire situation: the vow, the delay, and Cholkar's personal penance of giving up sugar. It was a direct confirmation that his secret devotion had been seen and accepted.