Acharya Prashant explains the profound concept from the Bhagavad Gita where Shri Krishna describes the eternal Supreme Brahman as being neither 'Sat' (existence/truth) nor 'Asat' (non-existence/untruth). He clarifies that in our common understanding, 'Asat' refers to things that are false or illusory, which have names, forms, and mental images. Since every image has an opposite, if 'Asat' has an image, its opposite 'Sat' must also have an image and a name. However, the ultimate Truth or Brahman is beyond all names, forms, and mental conceptions. Therefore, Brahman cannot be categorized as 'Sat' or 'Asat' because both these terms belong to the realm of human cognition and duality.