How did Sai Baba demonstrate his omniscience to Laxmichand, and what was Laxmichand's reaction?

Chapter 28 of the Shri Sai Satcharitra details an incident where Sai Baba demonstrated his omniscience to a devotee named Laxmichand. Laxmichand had a private thought that Baba's persistent cough might be the result of an 'evil eye.' The very next morning, Baba Himself voiced this exact concern, asking if an evil eye had struck Him. This caused wonder in Laxmichand's heart, making him realize that Baba must dwell within everyone's heart to know such a personal thought. In response, Laxmichand pleaded with folded hands for Baba's continued grace and protection, declaring that he had no other God and wished for his mind to always delight in Baba's worship.