Mundaka 2.1.4 Trans & Comms

agnirmūrdhā cakṣuṣī candrasūryau diśaḥ śrotre vāgvivṛtāśca vedāḥ. vāyuḥ prāṇo hṛdayaṁ viśvamasya padbhyāṁ pṛthivī hyeṣa sarvabhūtāntarātmā. (2.1.4) 

eṣaḥ – this (virāṭ); sarvabhūtāntarātmā – self of all beings; hi – indeed; etasmāt – of this (Brahman); jāyate – is born; asya – his; mūrdhā – head; agniḥ – heaven; cakṣuṣī – eyes; candrasūryau – are the moon and the sun; śrotre – ears; diśaḥ – quarters; vāk – his speech; vivṛtāḥ – well known; vedāḥ – Vedas; prāṇaḥ – prāṇa; vāyuḥ – the air; hṛdayam – mind; viśvaḥ – the world; ca – and; padbhyām – his feet are; pṛthivī – earth 

This virāṭ who is the self of all beings, is indeed born of Brahman. His head is heaven; his eyes are the sun and the moon; his ears are the quarters; his organ of speech is the well-known Vedas; his prāṇa is air; his mind is the world and his feet are the earth.

That virāṭ alone is sarva-bhūtāntarātmā, the self in all beings. Not only is he the whole creation, he is the caitanya behind the whole creation. He is, indeed, in all beings as seer, hearer, thinker and knower, and he is the basis of all beings. There is nothing outside this puruṣa. Therefore, any upādhi is non-separate from the puruṣa. The puruṣa is satya and the upādhi is mithyā. We have to separately state this all the time.

~Dayananda

Heaven as fire is His head; sun and moon are His eyes; four quarters or directions are His ears; the Vedas that are expressed are is His speech; the air is His breath; the universe is His mind (heart); the earth has come from His feet. He is indeed the inner Self of all beings.

Technically the Supreme, identifying with an individual physical structure, as we always do in our waking state of consciousness, is called Viśva. And, the Reality or the Self, identifying with the entire world of gross forms is, in Vedānta, called Virāṭ. In this mantra is the description of Virāṭ as the formless Reality.

~Chinmayananda

The heavens are His head; the sun and moon, His eyes; the quarters, His ears; the revealed Vedas, His speech; the wind is His breath; the universe, His heart. From His feet is produced the earth. He is, indeed,· the inner Self of all beings.

In this verse Brahman is conceived of as Virat, the first embodied manifestation of the Lord as the totality of the bodies in the universe, and also as the inmost Self of all beings. Virat is present in all beings as the seer, hearer, and knower. He is also the infinite, all-pervading Spirit (Vishnu).

~Nikhilananda