Can you elaborate on the meaning of the 'two paise' that Sai Baba's Guru requested from him?

In a teaching found in Chapter 19, Sai Baba explains that his Guru, a great Auliya, once asked him for 'two paise'. Baba clarified that this was not a request for worldly money, as his Guru was desireless and had no need for it. Instead, the 'two paise' were symbolic of two essential spiritual qualities: 'Faith' (Nishtha) and 'Patience' (Saburi). Baba stated that he immediately gave these to his Guru, which pleased his Guru-Mother. He described these virtues as being like "two sisters, dear as life to each other." This story illustrates that what a true Guru desires from a disciple is not material wealth but the internal cultivation of unwavering faith and steadfast patience, which are the real currency on the spiritual path.