What was the 'Satya-Sai vow' that the Patil started, and how did he perform it?

After being healed by Baba, the Patil initiated a new devotional practice called the 'Satya-Sai vow' as an expression of his immense gratitude. Chapter 13 explains that this was modeled after the traditional Satyanarayan vow. The Patil would observe this vow every Thursday after bathing. Instead of the standard Satyanarayan story, he would read about Sai's character from the 'modern Bhaktalilamrut' written by Das Ganu. Specifically, he focused on the three chapters dedicated to Sainath within that book, which he considered to be the 'Satya-Sai story.' This practice, performed with offerings and celebration, brought him boundless happiness and peace of mind.