Based on his teachings to the old lady, what did Sai Baba consider to be the most important qualities in a disciple?

According to Chapter 19, Sai Baba emphasized two qualities as paramount for a disciple: Faith (Nishtha) and Patience (Saburi). He conveyed this through a story where his own Guru requested these two virtues, metaphorically calling them 'two paise.' Baba described Patience as the 'manliness of men,' a virtue that wards off sin, distress, and fear while bringing success. He considered Faith and Patience to be like 'two sisters, dear as life to each other.' He further explained that even a powerful Guru expects these qualities from a disciple, stating that strong faith at the Guru’s feet and the courage of patience are essential.