How did Sai Baba demonstrate his omniscience to Laxmichand regarding his unspoken thoughts and physical ailments?

Sai Baba demonstrated his profound inner knowledge, or omniscience, to Laxmichand in a very direct manner, as detailed in Chapter 28. While Laxmichand was silently suffering from hunger and back pain, Baba openly spoke words that mirrored his exact condition: "Hunger has come, that's good. There should be medicine for back pain." Later, during a Chavadi procession, Laxmichand privately thought that Baba's cough might be due to an 'evil eye.' The very next morning in the masjid, Baba voiced the same thought, showing that he was aware of Laxmichand's innermost mental concerns. These events proved to Laxmichand that Baba was an "echo without sound," fully aware of his unspoken troubles.