How does the practice of chanting the Guru's mantra, such as 'Sai Samarth', connect to achieving the 'supreme attainment' of Brahman-bliss?

The practice of chanting the Guru's mantra is presented as a direct path to what the text calls "supreme attainment." According to Chapter 1, the mantra 'Sai Samarth' holds vast power that propels devotees toward liberation. This supreme attainment is not just a concept but a tangible state of being, described as a "joyful disposition" marked by peace and satisfaction, where one constantly realizes 'Brahman is truth' and 'The world is an illusion.' Since Sai himself is identified as the "mine of this joyful disposition," chanting his name is the method by which a devotee taps into this source, receiving his grace and ultimately being gifted this state of supreme, ocean-like bliss.