हि भगव इति ।स होवाच प्रजापतिः प्रणवं सावित्रीं यजुर्लक्ष्मीं नृसिंहगायत्रीमित्यङ्गानि जानीयाद्यो जानीते सोऽमृतत्वं च गच्छति ।ओमित्येतदक्षरमिदं सर्वं तस्योपव्याख्यानं भूतं भवद्भविष्यदिति सर्वमोंकार एव यच्चान्यत्त्रिकालातीतं तदप्योंकार एव सर्वं ह्येतद्ब्रह्मायमात्मा ब्रह्म सोऽयमात्मा चतुष्पाज्जागरितस्थानो बहिःप्रज्ञः सप्ताङ्ग एकोनविंशतिमुखः स्थूलभुग्वैश्वानरः प्रथमः पादः स्वप्नस्थानोऽन्तःप्रज्ञः सप्ताङ्ग एकोनविंशतिमुखः प्रविविक्तभुक्तैजसो द्वितीयः पादो यत्र सुप्तो न कंचन कामं कामयते न कंचन स्वप्नं पश्यति तत्सुषुप्तं सुषुप्तस्थान एकीभूतः प्रज्ञानघन एवानन्दमयो ह्यानन्दभुक्चेतोमुखः प्राज्ञस्तृतीयः पाद एष सर्वेश्वर एष सर्वज्ञ एषो-
In plain words
'...Lord.' And Prajāpati answered: 'Know the syllable Om, the Sāvitrī verse, the Yajus called Lakṣmī, and the Nṛsiṃha-Gāyatrī as the limbs of this mantra. Whoever knows this reaches immortality. Om — this one syllable — is this entire universe. Here is what that means: everything that has been, everything that is, everything still to come — all of it is simply Om. And whatever stands outside time altogether — that too is simply Om. Because all this is Brahman. This very Self is Brahman. And this Self has four faces. Waking life, looking outward, rich with its seven limbs and nineteen doorways, feeding on the solid world — that is Vaishvanara, the first face. Dreaming, looking inward, with the same seven limbs and nineteen doorways, feeding on the subtle — that is Taijasa, the second face. Where the sleeper wants nothing at all and sees no dream at all, that is deep sleep. There, gathered into one, a single mass of awareness, nothing but bliss, tasting bliss itself, mind its only doorway — that is Prajna, the third face. This is the one who rules everything. This is the one who knows everything. This is the one who...' — and there the page runs out.
Close to the Sanskrit
'...indeed, O Lord' [continuing the gods' address]. Prajāpati then said: 'One should know the praṇava [Om], the Sāvitrī, the Yajus called Lakṣmī, and the Nṛsiṃha-Gāyatrī as its [the mantra's] auxiliary parts. Whoever knows this attains immortality. Om — this syllable — is this whole [universe]; here is its further explanation. What has been, what is, and what will be — all this is simply the syllable Om; and whatever else lies beyond the three times, that too is simply the syllable Om. For all this is Brahman; this Self is Brahman; and this Self has four quarters. [1] The waking state, whose sphere is outward awareness, with seven limbs and nineteen mouths, the enjoyer of the gross — Vaiśvānara — is the first quarter. [2] The dream state, whose sphere is inward awareness, with seven limbs and nineteen mouths, the enjoyer of the subtle — Taijasa — is the second quarter. [3] Where the sleeper desires no desire whatsoever and sees no dream whatsoever, that is deep sleep. In the state of deep sleep, become one undivided mass, a solid mass of consciousness, made wholly of bliss, the enjoyer of bliss, whose very doorway is thought — Prājña — is the third quarter. This one is the lord of all; this one is the knower of all; this one is...' [the text breaks off at the page boundary]