रसोऽहमप्सु कौन्तेय प्रभास्मि शशिसूर्ययोः ।प्रणवः सर्ववेदेषु शब्दः खे पौरुषं नृषु ॥
raso’hamapsu kaunteya prabhāsmi śaśisūryayoḥpraṇavaḥ sarvavedeṣu śabdaḥ khe pauruṣaṃ nṛṣu
I am taste in the waters, O son of Kunti, I am the light of sun and moon, I am pranava (the syllable OM) in all the Vedas, sound in ether and manhood in men.
Gītā 7·8That is to say, the Divine himself in his Para Prakriti is the energy at the basis of the various sensory relations of which, according to the ancient Sankhya system, the ethereal, the radiant, electric and gaseous, the liquid and the other elemental conditions of matter are the physical medium.
OM is the one universal formulation of the energy of sound and speech, that which contains and sums up, synthetises and releases all the spiritual power and all the potentiality of Vak and Shabda and of which the other sounds, out of whose stuff words of speech are woven, are supposed to be the developed evolutions.