How did the villagers' perception of Sai Baba change from seeing him as a madman to recognizing his divine nature?

Initially, the villagers of Shirdi considered Maharaj to be an ordinary or even a mad Fakir. As described in Chapter 0, he wore torn clothes, sat in random places like under a Neem tree, and sometimes assumed a fierce form, which made him seem mad to the public. However, their delusion was removed by a miraculous event. Maharaj was fond of lighting lamps in the Masjid, but one day the local grocers refused to give him oil. Undeterred, he filled the lamps with water and lit them. When the lamps burned all night just as if they were filled with oil, the people were amazed. This event, detailed in Chapter 0, caused them to surrender to Maharaj, apologize for their past insults, and finally understand his true worth.