<p>The Prashna Upanishad is a Hindu philosophical text presented as a series of six questions ("prashna") posed by different disciples to the sage Pippalada, primarily focusing on the nature of Brahman (the ultimate reality), the relationship between the individual self (Atman) and the universal Self, and the path to liberation through meditation, with key themes including the importance of "Prana" (life force) and the three states of consciousness (waking, dreaming, and deep sleep)</p><p>Exploration of the concept of Brahman, the nature of Atman, the significance of Prana (life force), and the relationship between the individual and the universe.</p><p>The Upanishad emphasizes the practice of meditation on the syllable "Om" as a means to achieve self-realization.</p><p>It discusses the concept of the three states of consciousness - waking, dreaming, and deep sleep - and their relation to the ultimate reality</p>