Why does the author of the Satcharita say that Sai's greatness is 'inexpressible' in Chapter 49, and what examples does he use?

The author emphasizes the inexpressible nature of Sai's greatness in Chapter 49 by explaining the limits of language itself. He states that his speech cannot describe Sai's unfathomable 'Leela' (divine play). To illustrate this, he references the four stages of speech from Hindu philosophy. The chapter notes that where 'Para' (transcendental speech) has to turn back, and 'Pashyanti' and 'Madhyama' (the intermediate stages) cannot even speak, the fourth stage, 'Vaikhari' (the spoken word), is completely powerless. By using this profound philosophical concept, Chapter 49 conveys that Sai's true form and glory are beyond the grasp of human intellect and expression.