What reading material did the Patil use for his 'Satya-Sai vow,' and how did this practice spread?

Chapter 13 explains that for his 'Satya-Sai vow,' the Patil used a book called the 'modern Bhaktalilamrut,' which was written by Das Ganu. Within this book, which contained stories of many devotees, there were three specific chapters about Sainath. The Patil considered these three chapters to be the 'Satya-Sai story' and would read them with love as part of his regular vow. The chapter mentions that he performed this vow regularly with friends, relatives, and brothers, including offerings and celebration. Because the Patil started this tradition, it 'became the custom in the village,' with recitations of the Satya-Sai vow continuing one after another.