Describe the scene where Sai Baba reveals his knowledge of Laxmichand's physical ailments and hunger.

While waiting for the meal after the arati, Laxmichand was suffering internally, feeling restless from both hunger and back pain. In that moment, Sai Baba uttered words that perfectly mirrored Laxmichand's condition. As Chapter 28 describes, Baba said, "Hunger has come, that's good. There should be medicine for back pain. Now the wind of khaja has blown; do the arati quickly." These words were a clear verbalization of Laxmichand's silent suffering. This event, referred to as an "echo without sound," proved to Laxmichand that Maharaj Sai possessed profound inner knowledge of his devotees' physical and mental states.