Can you describe the relationship between Sai Baba and his Guru as explained in the text?

Chapter 19 provides a deeply personal account of Sai Baba's relationship with his Guru. Baba describes serving him for twelve years, during which the Guru raised him with immense love, ensuring there was no shortage of food or clothing. He refers to his Guru as an 'ocean of mercy' and a 'veritable idol of devotion and love.' The connection was so profound that Baba felt neither hunger nor thirst while gazing at his Guru's face, and his mind was restless without him. This constant contemplation was all the Guru expected. Even when physically separated, Baba felt the Guru's protection, which he compares to a mother tortoise on one riverbank nurturing her young on the other with her loving glance alone.