Can you describe the intense devotion Sai Baba had for his Guru, based on his personal account in Chapter 19?

Chapter 19 provides a vivid and moving account of Sai Baba's profound devotion to his Guru. He describes serving his Guru for twelve years, a period during which he was raised from a child to an adult with no shortage of food, clothing, or love. Baba's devotion was all-consuming, as he explains, "I would gaze at my Guru's face with love day and night; I felt neither hunger nor thirst; without the Guru, my mind was restless." His entire focus was on his master, to the exclusion of all else: "There was no meditation without him, no other goal; he was my only constant contemplation—the Guru’s wonder was marvelous." This passage highlights an absolute, single-pointed devotion where the Guru's presence was the sole source of joy and sustenance for the disciple.