How did Sai Baba demonstrate his inner knowledge, or omniscience, to Laxmichand?

Chapter 28 provides multiple examples of Sai Baba demonstrating his inner knowledge to Laxmichand. Firstly, Baba knew Laxmichand's unexpressed desire for khaja and orchestrated events to fulfill it. Secondly, when Laxmichand was suffering from both hunger and back pain, Baba's words directly addressed these issues, saying, "Hunger has come, that's good. There should be medicine for back pain." The text notes this was an "Echo without sound." Finally, when Laxmichand privately thought Baba's cough might be from an 'evil eye,' Baba later spoke similarly, confirming he was aware of Laxmichand's innermost thoughts.