All this is the syllable Om: past, present and future are Om, and what lies beyond the three times is Om as well. All this is Brahman; this Self is Brahman, and it has four quarters. The first is Vaishvanara, the waking state, knowing outward and enjoying the gross. The second is Taijasa, the dream state, knowing inward and enjoying the subtle. The third is Prajna, deep sleep, where nothing is desired and no dream is seen, a mass of awareness made of bliss, lord of all. The fourth is neither inward nor outward knowing, ungraspable, the stilling of the world, peaceful, auspicious, one without a second: that is the Self to be known. The letters A, U and M match the first three; the fourth is measureless.
omityetadakṣaramidam̐sarvaṃ tasyopavyākhyānabhūtaṃ bhavad bhaviṣyaditi sarvamoṅkāra eva | yaccānyat trikālātītaṃ tadapyoṅkāra eva
Om: this syllable is all this. Here is its explanation. What was, what is and what will be, all is Om alone. And whatever else lies beyond the three times, that too is Om.
yatra supto na kañcana kāmaṃ kāmayate na kañcana svapnaṃ paśyati tat suṣuptam | suṣuptasthāna ekībhūtaḥ prajñānaghana evānandamayo hyānandabhuk cetomukhaḥ prājñastṛtīyaḥ pādaḥ
Where the sleeper desires nothing and sees no dream, that is deep sleep. The third quarter is Prajna, whose field is deep sleep: become one, a mass of knowing, made of bliss, enjoying bliss, with consciousness as his door.
नान्तःप्रज्ञं न बहिष्प्रज्ञं नोभयतःप्रज्ञं न प्रज्ञानघनं न प्रज्ञं नाप्रज्ञम् । अदृष्टमव्यवहार्यमग्राह्यमलक्षणं अचिन्त्यमव्यपदेश्यमेकात्मप्रत्ययासारं प्रपञ्चोपशमं शान्तं शिवमद्वैतं चतुर्थं मन्यन्ते स आत्मा स विज्ञेयः
nāntaḥprajñaṃ na bahiṣprajñaṃ nobhayataḥprajñaṃ na prajñānaghanaṃ na prajñaṃ nāprajñam | adṛṣṭamavyavahāryamagrāhyamalakṣaṇaṃ acintyamavyapadeśyamekātmapratyayāsāraṃ prapañcopaśamaṃ śāntaṃ śivamadvaitaṃ caturthaṃ manyante sa ātmā sa vijñeyaḥ
Not knowing inward, not knowing outward, not knowing both ways, not a mass of knowing, neither knowing nor unknowing; unseen, beyond dealings, ungraspable, without marks, unthinkable, indescribable, its essence the one Self, where the world ceases, peaceful, auspicious, non-dual: this they hold to be the fourth. That is the Self; that is to be known.
jāgaritasthāno vaiśvānaro'kāraḥ prathamā mātrā''pterādimattvādvā''pnoti ha vai sarvān kāmānādiśca bhavati ya evaṃ veda
Vaishvanara, whose field is waking, is A, the first measure, because A pervades all sounds and comes first. He who knows this attains all desires and becomes first.
svapnasthānastaijasa ukāro dvitīyā mātrotkarṣāt ubhayatvādvotkarṣati ha vai jñānasantatiṃ samānaśca bhavati nāsyā'brahmavitkule bhavati ya evaṃ veda
Taijasa, whose field is dream, is U, the second measure, because it is higher and stands between the two. He who knows this raises the line of knowledge and is held equal by all; in his family none is born who does not know Brahman.
सुषुप्तस्थानः प्राज्ञो मकारस्तृतीया मात्रा मितेरपीतेर्वा मिनोति ह वा इदं सर्वमपीतिश्च भवति य एवं वेद
suṣuptasthānaḥ prājño makārastṛtīyā mātrā miterapītervā minoti ha vā idaṃ sarvamapītiśca bhavati ya evaṃ veda
Prajna, whose field is deep sleep, is M, the third measure, because it measures all and all merges in it. He who knows this measures all this and becomes the place where all merges.
अमात्रश्चतुर्थोऽव्यवहार्यः प्रपञ्चोपशमः शिवोऽद्वैत एवमोङ्कार आत्मैव संविशत्यात्मनाऽऽत्मानं य एवं वेद
amātraścaturtho'vyavahāryaḥ prapañcopaśamaḥ śivo'dvaita evamoṅkāra ātmaiva saṃviśatyātmanā''tmānaṃ ya evaṃ veda
The fourth is without measure, beyond all dealings, where the world ceases, auspicious and non-dual. So Om is the Self itself. He who knows this enters the Self by the Self.
Text source: Wikisource · CC BY-SA 4.0 (Wikisource transcription of a public-domain text)