Chapter 49 mentions different stages of speech to describe the difficulty of expressing Sai's greatness. Can you explain what it says?

Chapter 49 explains that Sai Baba's Leela (divine play) is inexpressible and his nature is inconceivable. To illustrate this, the author references the Vedic concept of the four stages of speech. He states that where Para, or transcendental speech, has to turn back, the subsequent stages of Pashyanti (intuitive speech) and Madhyama (mental speech) cannot even begin. This implies that the fourth and final stage, Vaikhari (the spoken word), is utterly powerless to describe the Sadguru's unfathomable greatness. Despite knowing the futility of words, the author feels compelled to write because the sweetness of Sai's qualities makes it impossible for him to remain silent, as detailed in this chapter.