Māndukya 1.03

जागरितस्थानो बहिःप्रज्ञः। सप्ताङ्ग एकोनविंशतिमुखः स्थूलभुग् वैश्वानरः प्रथमः पादः ॥३॥

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'.

"चतुर्धाऽवस्थितो देहे परमात्मा सनातनः। वैश्वानरो जागरितस्थानगो गजवक्त्रकः॥

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

निर्माता बाह्यसंवित्तेर्जीवानां तदगोचरः। अष्टादशमुखान्यस्य पुमाकाराणि सर्वशः॥

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

मध्यमं तु गजाकारं चतुर्बाहुः परः पुमान्। पादौ हस्तिकरो हस्ता इति सप्ताङ्ग ईरितः॥

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

स्थूलान् भोगान् इन्द्रियैस्तु शुभान् भुङ्क्ते न चाशुभान्। विश्वं स्थूलं समुद्दिष्टं सर्वगम्यत्वहेतुतः॥

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.

तत्सम्बन्धी नरोऽनाशाद् वैश्वानर उदाहृतः। विनायकस्तु विश्वस्य ध्यानादैत् गजवक्त्रताम्॥ तथैव तैजसध्यानात् त्रिध्यानादिन्द्र इन्द्रताम्। चतुर्ध्यानाच्च रुद्रत्वं रुद्र आप जनार्दनात्॥ एवम्भूतगुणो विष्णुश्चतुरात्मा परात् परः॥

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.

इति महायोगे ॥३॥

- stated thus in the ancient text of Mahāyog.