According to Chapter 13, what does Sainath truly require from his devotees, and how does the Patil's response to his healing demonstrate this?

Chapter 13 explicitly states what Sainath needs from his followers: 'Two hands, one head, stability, faith, and total surrender. Sainath needs nothing else; only that one gratitude should be there.' The Patil's actions after his miraculous healing are a perfect embodiment of these requirements. Overwhelmed with joy and gratitude, he seeks Baba's darshan and places his forehead on Sai's feet, acknowledging this as his only way to settle the 'debt' of grace. He recognizes Sai's 'inconceivable and unfathomable' novelty and channels his gratitude into action by initiating the 'Satya-Sai vow,' a devotional practice that spreads through his village. The Patil's response is not one of material offering but of complete surrender and active, heartfelt gratitude, just as the text says Sainath desires.