What's the story about Baba coughing and what did Laxmichand think about it?

The incident is detailed in Chapter 28, where it is mentioned that during a night-time Chavadi procession, Sai Baba started to cough. Laxmichand, who was present at the celebration, observed this and a thought arose in his mind. He silently speculated that the persistent cough might be the result of an evil eye cast upon Baba. This was just a private, mental thought. However, the story highlights Baba's omniscience because when Laxmichand visited the masjid the following morning, Baba spoke words that were very similar to Laxmichand's private thoughts, demonstrating that he was aware of what his devotee had been thinking.