What is the process of spiritual purification and attainment of self-knowledge as described in Chapter 46?

Chapter 46 details a clear path to self-knowledge through devotion to Sai Baba. It begins with surrendering one's body, speech, and mind at His feet and constantly chanting His name. According to this chapter, this practice washes away sins and purifies the individual by causing the qualities of 'Rajas' and 'Tamas' to vanish. Consequently, 'Sattva' (purity) increases, leading to the accumulation of Dharma (righteousness). This righteous disposition naturally brings about detachment from worldly subjects, which in turn allows self-knowledge to manifest instantly.