Can you explain the concept of Sai being 'subservient to his devotees' and how his nature as a benefactor continues even after he left his body?

In Chapter 48, Sai's nature is described in a unique way. He is said to act as one who is 'subservient to his devotees' not out of weakness, but out of the 'pure love of the devotees.' This is a vow he takes to show the multitude of his followers that he is their beloved. This benevolent nature is not confined to his physical lifetime. The chapter explains that even after leaving his body and merging with the Unmanifest, his quality of being a benefactor to his devotees does not end. It asserts that the very same actions and experiences of his grace that were available while he was in the body are still experienced today in his Unmanifest state by those who are devoted to him.