Verse

ओमित्येतदक्षरमिदं सर्वं तस्योपव्याख्यानं भूतं भवद्‌ भविष्यदिति सर्वमोङ्कार एव।
यच्चान्यत्‌ त्रिकालातीतं तदप्योङ्कार एव ॥

Transliteration

omityetadakṣaramidaṁ sarvaṁ tasyopavyākhyānaṁ bhūtaṁ bhavad bhaviṣyaditi sarvamoṅkāra eva|
yaccānyat trikālātītaṁ tadapyoṅkāra eva ||

Anvaya

इदं सर्वं इति एतत् अक्षरम् उपव्याक्षानं भूतं भवत् भविष्यत् इति सर्वम् ओङ्कारः एव। अन्यत् च यत् त्रिकालातीतं तत् अपि ओङ्कारः एव ॥

Anvaya Transliteration

idaṁ sarvaṁ iti etat akṣaram upavyākṣānaṁ bhūtaṁ bhavat bhaviṣyat iti sarvam oṅkāraḥ eva| anyat ca yat trikālātītaṁ tat api oṅkāraḥ eva ||

Meaning

OM is this imperishable Word, OM is the Universe, and this is the exposition of OM. The past, the present and the future, all that was, all that is, all that will be, is OM. Likewise all else that may exist beyond the bounds of Time, that too is OM.

Hindi Meaning

'ओम्' ही है यह 'अक्षर-शब्द', 'ओम्' ही सशृण 'विश्व' है और यह 'ओम्' की ही व्याख्या है! भूत, वर्तमान तथा भविष्य अर्थात् जो कुछ था, जो कुछ है तथा जो कुछ होगा, वह 'ओम्' है। इसी प्रकार 'काल' (त्रिकाल) की सीमा से परे जो कुछ भी हो सकता है वह भी 'ओम्' ही है।

Glossary

ओम् इति - om iti - OM is | एतत् - etat - this | अक्षरम् - akṣaram - imperishable Word | इदम् सर्वम् - idam sarvam - (OM is) the Universe and all this is | तस्य उपव्याक्षानम् - tasya upavyākṣānam - the exposition of OM | भूतम् - bhūtam - the past | भवत् - bhavat - the present | भविष्यत् इति - bhaviṣyat iti - and the future | सर्वम् - sarvam - all that was, all that is, all that will be | ओङ्कारः एव - oṅkāraḥ eva - is OM | अन्यत् च - anyat ca - likewise all else | यत् त्रिकालातीतम् - yat trikālātītam - that may exist beyond the bounds of Time | तत् अपि - tat api - that too | ओङ्कारः एव - oṅkāraḥ eva - is OM |

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'OM'-Sound of The Universe

Mandukyopanishad- Verse-1

OM (or AUM) is not merely a sound or symbol. It is the primordial vibration—the seed sound ("Nada Bindu")—from which the universe emerged. Found in the deepest layers of Hindu scriptures and yogic sciences, OM is regarded as the cosmic frequency that permeates all creation.

• In Sanskrit: OM is a blend of three sounds: A (waking), U (dream), M (deep sleep)
  
  

• Symbolically: It represents the union of body, mind, and soul
  
  

Spiritually: OM connects the practitioner with the divine consciousness

The Mandukya Upanishad is entirely dedicated to OM. It describes OM as the essence of the universe and the key to self-realization.

OM is referred to as "Pranava"—that which pervades life. It is a path to Brahman, the ultimate reality.

Bhagavad Gita

Lord Krishna says:

“I am the syllable OM in all the Vedas.” — (BG 7.8)

“Whoever, at the time of death, utters OM and leaves the body thinking of Me, attains the supreme goal.” — (BG 8.13)

Yoga Sutras of Patanjali

Patanjali refers to OM as "Ishvara’s name" (I.27) and suggests meditating on it for liberation from mental afflictions.

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Scientific Understanding of OM Chanting

Modern science has begun to validate what yogis knew for thousands of years.

Brainwave Synchronization

EEG studies show that chanting OM increases alpha and theta brainwaves—states associated with deep relaxation and meditation.

Autonomic Nervous System

OM activates the parasympathetic system, calming the heart and breath
Reduces cortisol (stress hormone) levels

Vibrational Healing

The vibration of OM stimulates the vagus nerve, improving emotional regulation and gut-brain health
The sound resonates through the nasal and chest cavity, creating a full-body calming effectMedical Research HighlightsA 2011 study in the International Journal of Yoga shows OM chanting increases alertness and emotional stability

NIH-supported research confirms OM improves heart rate variability (HRV), reducing hypertension risks