Could you explain the metaphysical process of liberation through devotion to Sai, as detailed in the source?

Chapter 3 outlines a path to liberation centered on devotion to Sai Baba. The process begins with faith and contemplation, where a devotee constantly remembers Baba. This leads to a state where worldly desires lose their hold. The text mentions that through listening, contemplation, and deep meditation ('Nididhyasana'), the concept of 'Aham-Soham' ('I am That') dissolves, signifying the transcendence of the individual ego. The devotee's mind then achieves a state of 'Unman' (transcendence), and the heart transforms into a 'cloud of consciousness' ('Chaitanyaghan'), which is achieved through exclusive and complete faith in Sai.