Describe the incident involving Baba's cough and Laxmichand's thought about the 'evil eye'.

During a Chavadi procession, Sai Baba developed a cough. A devotee named Laxmichand, upon seeing this, privately thought to himself that the cough might be the result of an evil eye. The very next morning, as described in Chapter 28, when Laxmichand was in the masjid, he witnessed a remarkable confirmation of Baba's omniscience. Baba, speaking to Madhavrao, said, "Yesterday I had much coughing; is this the effect of an evil eye?" By verbalizing the exact thought that had been in Laxmichand's mind, Baba revealed that he dwells in everyone's heart and is aware of their silent thoughts. This left Laxmichand in a state of wonder at Baba's power.