How does Sai Baba describe the connection between Faith (Nishtha) and Patience (Saburi)?

In Chapter 19, Sai Baba's teachings portray Faith (Nishtha) and Patience (Saburi) as intrinsically linked and equally vital for a disciple. They are presented as the 'two paise' the Guru requests, signifying that they are the fundamental price of discipleship. The text goes on to describe their relationship in deeply personal terms, stating, 'Faith and Patience are like two sisters, dear as life to each other.' This metaphor emphasizes their inseparability and mutual reliance. One cannot be truly cultivated without the other on the spiritual path, as both are required to please the Guru and achieve spiritual progress.