Drawing from Chapter 13, analyze the significance of the 'Satya-Sai vow' and how it equates Sai with Narayan.

The 'Satya-Sai vow,' initiated by the Patil as described in Chapter 13, is a significant development in devotional practice. It parallels the traditional Satyanarayan vow, which is performed to overcome a crisis. The Patil adapted this by substituting the reading of the Satyanarayan story with the three chapters on Sainath from Das Ganu's 'Bhaktalilamrut.' The text makes a profound theological statement by noting, "There it is Narayan, here it is Sai; there is no difference in either." This explicitly equates Sai with the supreme deity Narayan, suggesting that devotion to Sai is a valid and powerful path to the divine, equivalent to traditional forms of worship. This new custom, born of gratitude, became popular in the Patil's village.