According to the story of the Patil in Chapter 13, what does Sainath truly require from his devotees?

The Patil's story in Chapter 13 provides a clear answer about the nature of devotion to Sainath. After his miraculous healing, the Patil feels he can never truly repay the favor. He concludes that the only settlement is to 'place my head at your feet.' The narrative then explicitly clarifies what is needed, stating, 'Two hands, one head, stability, faith, and total surrender. Sainath needs nothing else; only that one gratitude should be there.' The Patil demonstrates this not just by prostrating himself, but through his ongoing devotion, staying in Shirdi for a month and later establishing the 'Satya-Sai vow' as a continuous expression of his deep-seated gratitude and faith.