What are the essential qualities for spiritual progress according to the Shri Sai Satcharitra?

According to the teachings found in Chapter 2 of the Shri Sai Satcharitra, achieving any part of one's spiritual goal is impossible without two essential qualities: faith, which is referred to as Shraddha, and patience, known as Saburi. The text firmly states that "Without faith (Shraddha) and patience (Saburi), Not a bit of the spiritual goal is achieved." This foundational lesson, which the author notes was experienced later, underscores the importance of unwavering belief and perseverance on the spiritual path, framing them as non-negotiable prerequisites for any advancement.