छायैतस्मिन्नेतदाततं
मनोकृतेनायात्यस्मिञ्शरीरे ॥ ३.३॥
chāyaitasminnetadātataṃ
manokṛtenāyātyasmiñśarīre .. 3.3..
3 This prana is born of Atman. As a shadow is cast by a person, so this prana is, by Atman. Through the activity of the mind it comes into this body.
Translation by Max Mueller
3. This Prâna (spirit) is born of the Self. Like the shadow thrown on a man, this (the prâna) is spread out over it (the Brahman). By the work of the mind does it come into this body.
Prashnopanishad Invocation
Prashna I – Spiritual paths of the Moon and Sun
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Prashna II – Discussion of Devas
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Prashna III – Origin and Nature of Prana
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Prashna IV – Mental States and Bliss
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Prashna V – Meditation on OM
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Prashna VI – The Purusha of 16 Kalas
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Closing Prayer – Closing
Sri Shankara’s Commentary (Bhashya) translated by S. Sitarama Sastri
This Prâna spoken of is born of the âtman, i.e., of the highest purusha, undecaying and true. As regards the how of it, the following illustration (is offered). As in this world, when the figure of the man consisting of the head, hands, etc., is the cause, his shadow is produced as the effect; so in this Brahman the true purusha, is this principle named Prâna analogous to the shadow and falls in its nature recognized as the shadow in the body. It comes into this body by the act of the mind, i.e., through the karma, arising from volition, wish, etc., of the mind; for, it will be said later on ‘By virtue, virtuous world, etc.’ Another sruti also says, ‘Intent on that fruit he reaches it with his karma.’
Prashna Upanishad – 3 – Prashna-3-3-ātmana eṣa – In Sanskrit with English Transliteration, Meaning and Commentary by Adi Shankaracharya (Sankara Bhashya) – Prashna-3-3