How does Sai Baba describe the relationship between Faith (Nishtha) and Patience (Saburi) in Chapter 19?

In Chapter 19, Sai Baba portrays Faith (Nishtha) and Patience (Saburi) as intrinsically linked and equally vital for a spiritual aspirant. He uses a tender metaphor, stating that 'Faith and Patience are like two sisters, dear as life to each other.' This implies an inseparable and mutually supportive relationship. The text further reinforces their combined importance by noting that even a powerful Guru 'expects only the disciple's wisdom; strong faith at the Guru’s feet and the strength of courage which is patience.' Therefore, one cannot be truly cultivated without the other; they are the twin pillars of a disciple's development.