How did the incident with Baba's cough demonstrate his omniscience to Laxmichand?

Chapter 28 recounts a profound instance of Baba's inner knowledge. During a Chavadi procession, Baba developed a cough, and Laxmichand privately thought to himself that the cough might be the result of someone's evil eye. The very next morning, when Laxmichand was in the masjid, Baba spoke to Madhavrao, seemingly to himself, and articulated the exact same thought. Baba wondered aloud if his persistent cough was the effect of an evil eye that had struck him. As Chapter 28 notes, hearing Baba echo his own secret mental thought left Laxmichand in wonder, proving to him that Baba dwells in everyone's heart and is aware of their innermost thoughts.