According to the source text, what specific book and chapters did the Patil read for his 'Satya-Sai vow'?

Chapter 13 provides specific details about the materials the Patil used for his newly established 'Satya-Sai vow.' Instead of the traditional Satyanarayan story, the Patil would read from the "modern Bhaktalilamrut," a book written by Das Ganu. Within this larger work, he focused specifically on the three chapters that Das Ganu had dedicated to singing about the character of Sainath. The text refers to these three chapters themselves as "the Satya-Sai story." By reading these specific passages with love and devotion, the Patil obtained boundless happiness and became peaceful in his mind, establishing a tradition centered on celebrating Sai's life and grace.