Can you describe the relationship Sai Baba had with his Guru and what he learned from him?

Sai Baba's relationship with his Guru was one of profound love and intense devotion, as he describes in Chapter 19. He served his Guru tirelessly for twelve years, feeling neither hunger nor thirst while gazing upon his Guru's face. This constant contemplation was his only goal. Baba describes his Guru as a 'veritable idol of devotion and love' and an 'ocean of mercy' who always protected him. While Baba initially desired a secret mantra, he learned that the true teaching was in the cultivation of Faith (Nishtha) and Patience (Saburi), the 'two paise' his Guru requested.