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वराह पुराण · अध्याय 118, "Eight Parts Touching the Ground"
उरसा शिरसा दृष्ट्या मनसा वचसा तथा।
पद्भ्यां कराभ्यां जानुभ्यां प्रणामोऽष्टाङ्ग उच्यते॥
urasā śirasā dṛṣṭyā manasā vacasā tathā |
padbhyāṃ karābhyāṃ jānubhyāṃ praṇāmo'ṣṭāṅga ucyate ||
With chest, head, eyes, mind, speech, feet, hands and knees, a bow made with these eight parts is called the eight-limbed prostration.
The bow is defined by count: eight things touch the ground, and two of them, mind and speech, cannot be placed there by the body. A posture is being used to check whether the interior came along. If mind and speech stayed standing, the prostration is incomplete however low the forehead went.
How the text gets there:
1. Worship is broken into small physical acts, each carrying an explicit inner sentence.
2. The sequence builds from cleaning through offering to the moment of lying flat.
3. The definition of that bow lists eight parts, including mind, sight and speech.
4. So the body's posture becomes a measuring device for whether attention actually came.
Today: Ritual, apology, ceremony, all of it can be performed with the body alone while the mind negotiates elsewhere. The eight-limb count is a usable test: did my attention and my words go down with my knees, or did I only send the knees?
In your last apology, what stayed standing?, tell me below.
Read the whole series, six Puranas, sixty chapters.