This article records tradition as it has been passed down and reported. Its sources are not yet part of the atlas's verified catalogue.
Where many Upanishads unfold as a single extended teaching, the Prashna Upanishad is organized around a simple and very deliberate frame: six students arrive at the sage Pippalada's hermitage, spend a full year living under his discipline before he will accept a single question from them, and then each in turn asks one thing he has been waiting to understand.
The questions move from the cosmic to the intensely personal. The first asks where created beings come from at all; the second turns to the vital breaths, the forces of life that animate speech, sight, hearing and the rest, and which of them is greatest; the third traces how those breaths enter and sustain the body and where they go in sleep; the fourth asks what actually happens during dreaming and dreamless sleep, and what remains awake even then; the fifth turns to meditation on the sacred syllable Om and what different depths of understanding it can carry a person toward; and the sixth and final question asks about the sixteen parts that make up a person and where they go when that person dies.
Pippalada answers every one of them in turn, and the effect of the six-part structure is to build outward from cosmology to physiology to psychology to practice to a final teaching on mortality, each question sharpening the one before it. The text closes, fittingly, with the students dismissed by Pippalada as men now equipped to become teachers themselves, a small formal detail that keeps the entire Upanishad framed as a completed act of instruction rather than an open ended treatise.