How does Sai Baba explain the interconnectedness of faith and patience in a disciple's development?

Sai Baba illustrates that faith and patience are inseparable and equally crucial for a spiritual aspirant. In Chapter 19, he refers to them as the two paise, Faith (Nishtha) and Patience (Saburi), that a Guru desires from a disciple. To emphasize their deep connection, the text beautifully describes them as "two sisters, dear as life to each other." It is stated that even a very powerful Guru expects these two qualities from a disciple above all else: "strong faith at the Guru’s feet and the strength of courage which is patience." A person without patience, regardless of their knowledge or virtue, is said to have a life that is in vain, showing how foundational this quality is to making faith effective.