What was the 'Satya-Sai vow' mentioned in Chapter 13, and how did the Patil initiate this practice?

The 'Satya-Sai vow' was a devotional practice initiated by the Patil to express his immense gratitude for being healed by Sai Baba's grace. Chapter 13 explains that just as people traditionally vow to perform a Satyanarayan puja to overcome a crisis, the Patil created a similar vow centered on Sai. Every Thursday, after bathing, he would observe this vow. Instead of the usual Satyanarayan story, the Patil would lovingly read the three chapters about Sainath from the 'modern Bhaktalilamrut' written by Das Ganu, which he considered to be the 'Satya-Sai story.' According to Chapter 13, he performed this vow regularly with a joyful mind, establishing a new tradition in his village that brought him and his community boundless happiness and peace.