The Satcharitra mentions an "echo without sound" in relation to Baba's powers. Can you explain this concept using the examples of Laxmichand's back pain and his thought about the 'evil eye'?

The phrase "echo without sound," found in Chapter 28, is a poetic description of Sai Baba's omniscience—his ability to perceive the unexpressed thoughts and feelings of his devotees. This concept is illustrated perfectly through his interactions with Laxmichand. When Laxmichand was silently suffering from both hunger and back pain, Baba openly spoke of these exact conditions, providing an "echo" to his silent suffering. Later, during the Chavadi procession, Baba developed a cough, and Laxmichand privately worried that it might be due to an 'evil eye.' The very next morning, Baba brought up this specific, unusual thought himself. These instances demonstrate that Baba's consciousness was so attuned to his devotees that their silent mental and physical states were reflected in his own words, as if he were an echo of their inner world.