According to the author Hemadpant, what is the significance of 'shraddha' and 'saburi' for spiritual aspirants?

In chapter 2 of the Shri Sai Satcharitra, the author Hemadpant presents the concepts of faith (Shraddha) and patience (Saburi) as absolutely essential for spiritual progress. After reflecting on the harmful nature of pride and debating, he states a firm scriptural truth that he also experienced personally: "Without faith (Shraddha) and patience (Saburi), not a bit of the spiritual goal is achieved." This highlights that these two qualities are not merely beneficial but are the fundamental prerequisites for anyone hoping to attain any measure of spiritual success. Without them, all efforts are considered futile.