What does the phrase 'Echo without sound' signify in the context of Laxmichand's experiences with Sai Baba?

The phrase "Echo without sound," mentioned in Chapter 28, refers to Sai Baba's extraordinary ability to know and verbalize the innermost, unexpressed thoughts and feelings of his devotees. It is used to describe how Baba's spoken words were a perfect reflection of what was in Laxmichand's mind. For example, Baba's comments on hunger and back pain, and his speculation that his cough was from an 'evil eye,' were direct echoes of Laxmichand's silent thoughts and physical sensations. This concept highlights Baba's omniscience and his nature as the 'inner dweller' (antarjnani), who has direct access to the consciousness of others without needing any physical sound or communication, as wonderfully illustrated in Chapter 28.