Can you provide a detailed definition of Shraddha and Saburi as explained by Sai Baba in Chapter 2?

In the provided text from Chapter 2, Sai Baba's teachings on Shraddha and Saburi are presented concisely rather than in a detailed definition. The author, Hemadpant, reflects on the firm scriptural truth that 'Without faith (Shraddha) and patience (Saburi), Not a bit of the spiritual goal is achieved.' This statement highlights their absolute necessity for spiritual progress. However, the chapter does not offer an expanded explanation or a direct, elaborate discourse from Sai Baba defining these two virtues. Their meaning is conveyed through their stated importance in the context of needing a Guru.