Can you explain how Baba demonstrated his inner knowledge by addressing Laxmichand's physical discomfort?

Chapter 28 details a remarkable instance of Sai Baba's divine perception. While waiting for the meal, Laxmichand was feeling restless due to both hunger and back pain. At that very moment, Baba spoke words that directly mirrored Laxmichand's internal state: "Hunger has come, that's good. There should be medicine for back pain." The text describes this as an "echo without sound," highlighting that Maharaj possessed profound inner knowledge (antarjnan). By voicing Laxmichand's exact, unspoken physical and mental condition, Baba demonstrated that he was aware of the innermost feelings of his devotees, which in turn strengthened Laxmichand's devotion.