How did Sai Baba prove his divine nature to the villagers who initially thought he was just a mad Fakir?

Initially, the villagers of Shirdi considered Sai Baba to be an ordinary or even a mad Fakir due to his unconventional behavior and torn clothes. Their perception changed due to a miraculous event involving lamps. As detailed in Chapter 0, Baba had a habit of lighting lamps in the Masjid, for which he would get oil from local grocers. When they tired of giving him oil and refused, Baba simply filled the lamps with water. To the astonishment of the onlookers, he lit the water-filled lamps with a match, and they burned brightly all night. This act of divine power amazed the villagers, removed their delusion, and caused them to surrender to him and apologize for their prior treatment.