In several contemplative traditions, such as Advaita Vedanta, there is the idea of a “witness-consciousness” or “knower-consciousness” that stands apart from thoughts, sensations, and experiences. This witnessing awareness is often treated as the 'true' or 'pure' Self, something unchanging and fundamental that observes the flux of mental and physical phenomena. Analogously, in Kashmir Śaivism, philosophers like Utpaladeva argue in works such as Ajada Pramatra Siddhi that there is an 'ultimate knower' which must also be inherently sentient, self-revealing consciousness, and not insentient or conditioned under dependent origination, explicitly critiquing Buddhist positions such as Vijñānavāda on the nature of consciousness and selfhood. (The text is quite short and can be read here and here ) ---------- Given all this, I am curious how various Buddhist schools engage with or respond to this idea of a witness-consciousness or the knower-consciousness. If such a witnessing consciousness is rejected, how is it explained phenomenologically? Is the sense of being a “knower” understood as merely a conceptual imputation on the five aggregates, or could it be interpreted as some kind of emergent property arising from them? Alternatively, do any Buddhist schools come close to accepting something like a reflexive or self-knowing awareness without committing to a metaphysical self? I am especially interested in how different traditions such as Theravāda, Madhyamaka, and Yogācāra would approach this issue, and whether any schools of buddhism had direct historical engagements or debates with thinkers like Utpaladeva or similar arguments from non-Buddhist traditions.

Since for my last question , I did not get a satisfactory answer I am reducing the question to its barebones. What is the difference between 'Witnessing' and 'Mindfulness' from the context of meditation? I mean when I am looking at the sunset without any thoughts in mind and feel a oneness, am I witnessing the sunset or I am being mindful of the eye-consciousness? In the Mahāsatipaṭṭhānasutta MN 10 the word mindfulness is used, can I replace it with the word, 'Witnessing' without changing the meaning?

I am a bit confused about what is the difference between 'witnessing meditation' as taught by Osho, which can be found here , here , and here , and 'silent present moment awareness ' (*page number 11*) as taught by Ajahn Brahm in his book, 'Mindfulness bliss and beyond'. At first, they both seem identical to me, but as I practice with Osho's instructions it's difficult to get to that point He describes. I would appreciate if the commentary is provided along with the answer from practice point of view.