It is accepted traditionally that there are Four Vedas in Hinduism.
They are not written and transmitted orally since five thousand years.
The Vedas themselves, Ithihasas,Ramayana and Mahabharata , the entire Sanskrit Literature , and in other languages as well,and the eighteen Puranas declare so,
The Chandogya Upanishad.
It states that there is another Veda, the Fifth veda.
‘itihāsapurāṇaṃ pañcamaṃ vedānāṃ’
-Chandogya Upanishad (7.1.2)
It is one thing for an Ithihasa or agreat literary work to be called a Veda, as a tribute; but a Upanishad, a part of Veda, declaring that there is another Veda, is intriguing.
‘the Mahabharata declares itself a new Veda for a new era, intended for all people, and which is the equal of, and in some ways superior to, the four canonical Vedas.The other major Hindu epic, the Ramayana, also makes a claim to be the fifth Veda’
The Bhagavata Purana elaborates on the Chandogya Upanishad’s statement concerning the fifth, by stating that after the four Vedas emerged from each of Brahma’s four mouths, the fifth Veda – itihasapurana – emerged from his fifth mouth or all his mouths. It then declares itself supreme over all other puranas, on the grounds that it was Vyasa’s crowning achievement. Similarly, the Skandapurana, too, suggests that the puranas are the Fifth Veda, thus giving itself scriptural authority
There is another view that this fifth Veda is called the Pranava Veda and it was from the Pranava ‘OM’
Ganapati Sthapati’s range of accomplishments is extraordinary. He has designed and built more than 600 temples in India and the U.S., the U.K., Australia, Singapore, Malaysia, Fiji, Sri Lanka and Kenya. He was the architect of Swaminatha Swami Murugan temple, popularly called Malai Mandir, situated on a hillock at Ramakrishnapuram, New Delhi.’
He asserts that the controversy over which language is older – Sanskrit or Tamil – is needless. He calls Sanskrit “the classical language of sculptors.” He will build a Veda Mandapam in the University to teach not only the Rig, Yajur, Sama and Atharva Vedas but also the Pranava Veda in Tamil. He estimates that the Pranava Veda is older than the other four Vedas. Ganapati Sthapati has already recorded on audio-tape the 50,000 stanzas of the Prananva Veda. He is keen that the Tamil Nadu Government should publish it and spread it.’
“The Pranava Veda is the first Veda and the “source Veda.” Dr. V. Ganapati Sthapati explains, “A good deal of evidences is available both in Tamil as well as in Sanskrit works, particularly in Srimat Bhagavatam and Skandam about the remote existence of Pranava Veda. This Veda was later on called the science of Vastu (energy) and Vaastu (embodied energy), which is gaining much popularity today across the globe.”
Dr. V. Ganapati Sthapati goes on to say that Veda Vyasa himself said in the Bhagavatam:
“eka eva pura vedo pranavha sarva vangmayha”
(9th skandha, 14th chapter, sloka 48 of Bhagavatam)
This phrase by Veda Vyasa, the compiler of the present day Vedas, means that there was only one Veda in the remote past and that Veda is called Pranava Veda – the Veda of the shilpis of India. Artharva Sheershopanishad makes mention of the term “Pranava” as being “ongara” – the all-pervasive substance.
Pranava Veda elucidates the science of Pranava. It is the scientific study of The All Pervading Substance. Pranava Veda presents the science of “how the invisible substance of the universe (paravastu) makes itself manifest in the visible material (Vaastu) forms.” In other words, Pranava Veda reveals the process of how the All Pervasive pure Energy turns into Matter or material existence.(www.vastuved.com)