What motivated the grocers to stop giving Sai Baba oil, and how did they react after his miracle?

The source material in Chapter 5 explains that the grocers had been providing Baba with oil for free every day for his lamps. Over time, they developed a "wicked idea" and came to see his daily request as a "nuisance" they wanted to stop. They conspired together to refuse him oil. However, after witnessing Baba light the lamps with water and seeing them burn all night, their attitude shifted dramatically. The text states they were amazed, putting their fingers in their mouths in shock. They immediately felt repentance, realizing they had sinned by speaking an untruth and had given Baba "needless trouble."