Māndukya 1.03

jāgaritasthāno bahiḥprajñaḥ। saptāṅga ekonaviṃśatimukhaḥ sthūlabhug vaiśvānaraḥ prathamaḥ pādaḥ ॥3॥

In the waking state, the consciousness is directed outward, characterized by seven limbs and nineteen mouths, and it experiences the gross objects. The first form of the lord that giverns this is known as Vaiśvānara.

Bhāshya 1.03

A testimonial from the ancient text of Mahāyog is referenced, explaining the four forms of Lord Vishnu, the first being 'Vaiśvānara'. He is called 'Viśvaṃ', i.e. the Universal, as He is perceptible to all in gross form as the Universe, and also is the cause of all. He is also 'Nara' i.e. the man, associated with that Universal form, who is without destruction, hence is called 'Vaiśvānara'.

"caturdhā'vasthito dehe paramātmā sanātanaḥ। vaiśvānaro jāgaritasthānago gajavaktrakaḥ॥

"The eternal Supreme Person resides in the body in four forms: Vaiśvānara, the waking state, the form with an elephant face.

nirmātā bāhyasaṁvitterjīvānāṁ tadagocaraḥ। aṣṭādaśamukhānyasya pumākārāṇi sarvaśaḥ॥

The creator, who is beyond the perception of the external consciousness of living beings, possesses eighteen faces and entirely male forms.

madhyamaṁ tu gajākāraṁ caturbāhuḥ paraḥ pumān। pādau hastikaro hastā iti saptāṅga īritaḥ॥

The middle one is an elephant-shaped superhuman with, four-arms, two feet, and a trunk, thus is said to be seven-limbed.

sthūlān bhogān indriyaistu śubhān bhuṅkte na cāśubhān। viśvaṃ sthūlaṃ samuddiṣṭaṃ sarvagamyatvahetutaḥ॥

His senses enjoy gross pleasures, but not the inauspicious ones. He is called "Viśvaṃ", the Universal, as is perceptible to all, and also is the cause of all.

tatsambandhī naro'nāśād vaiśvānara udāhṛtaḥ। vināyakastu viśvasya dhyānādait gajavaktratām॥ tathaiva taijasadhyānāt tridhyānādindra indratām। caturdhyānācca rudratvaṃ rudra āpa janārdanāt॥ evambhūtaguṇo viṣṇuścaturātmā parāt paraḥ॥

He is "naraḥ" - the man, associated with that Universal form, who is without destruction, hence is called "Vaiśvānara". Lord Vinayaka, through meditation on the universal "Vaiśvānara" form and that of "taijasa", the luminous one, attained the form of an elephant-faced deity. In the same way, Indra attains the state of being Indra through the threefold meditation (on Vaiśvānara, taijasa, and Prajna i.e. the knowledgeable one). Through the fourfold meditation (on Vaiśvānara, taijasa, Prajna, and Turiya i.e. beyond the third or fourth), Rudra attains the state of being Rudra from Janardana. Thus, Vishnu, having qualities of existence, is the fourfold Ātmān, and is supreme and beyond.

iti mahāyoge ॥3॥

- stated thus in the ancient text of Mahāyog.