How does the text compare Sai Baba's spiritual attainment to that of a philosopher's stone, and what state of consciousness does this comparison describe?

As detailed in Chapter 4, Sai Baba's spiritual power is compared to, and even considered more extraordinary than, a philosopher's stone. While the stone merely turns iron into gold, a saint like Sai gives their own form, which is Self-realization, to their devotees. This act of giving leads to the state of oneness, a profound consciousness where the feeling of duality is discarded. In this state, one realizes 'I am everything' and sees the entire universe as Brahman. This realization is described as the source of supreme devotion and ultimate happiness.