Based on the Patil's story in Chapter 13, what are the essential qualities Sainath requires from a devotee?

Chapter 13 clarifies the core requirements for devotion to Sainath through the Patil's example. After his miraculous healing, the Patil's transformation reveals what is truly valued. The text explicitly states, "Sainath needs nothing else; only that one gratitude should be there." It elaborates on this by listing the essential elements as "Two hands, one head, stability, faith, and total surrender." The Patil demonstrated these qualities perfectly. His frequent visits to Shirdi, his overwhelming joy at Baba's darshan, and his creation of the Satya-Sai vow were all expressions of his deep faith, unwavering gratitude, and complete surrender to Sai's will, showing that the inner state of the devotee is paramount.