How did Sai Baba demonstrate that he knew about Laxmichand's private thoughts and physical discomfort?

Sai Baba demonstrated his omniscience to Laxmichand in several ways, as detailed in Chapter 28. First, when Laxmichand was suffering from hunger and back pain, Baba's words directly mirrored his condition: "Hunger has come, that's good. There should be medicine for back pain." Later, Baba fulfilled Laxmichand's unspoken craving for khaja. Most strikingly, when Laxmichand privately thought Baba's cough might be from an "evil eye," Baba voiced the exact same thought the next morning. These events convinced Laxmichand that Baba was an all-knowing being who dwelt in everyone's heart.