Messengers have been sent to all communities among mankind. The Qur'an makes it so explicitly clear as to leave behind not a shadow of a doubt, that 'there has not gone by a single nation wherein a warner was not sent.' (35:24) Therefore, as an ancient land in which had thrived a civilization and culture, India, too, must have had been the destination of the messengers. Further, some among those messengers must have been the recipients of scriptures also. It is not for the Muslim to take any of these messengers or their scriptures lightly or with indifference. For the Qur'an has sternly warned against showing partiality with respect to the messengers (4:150). The Qur'an therefore reveres the messengers who had come to India, as also the scriptures which were revealed to them.
But can it be said that any of the existing books on the Shruthi (the vedic compilations, Brahmanas, Aaranyas, Upanishads) has been revealed to the messengers by the Lord Creator? It is believed that these have been referred to as Shruthi because they had been heard of from God Himself.
The concept of Shruthi makes it clear that it was also the belief of the Hindus that mankind does, indeed, receive messengers from God. Even though all the above mentioned books are all Shruthis in themselves, the question as to which amongst them forms the more authoritative text is one over which there is much difference of opinion. While Dayanand Saraswathi, the founder of the Aarya Samaaj, accorded the authoritative status to four Vedas, others like Swami Vivekananda gave prime importance to the Upanishad.
There were also scholars of Hinduism who opined that even the most authentic of the Books of Shruthi can be prone to error. The stand of Dr. Radhakrishnan that 'the Vedas are neither infallible nor all-encompassing' (Indian Religions, Page 22) and of Swami Vivekananda that 'To the extent that they are supported by sound reasoning all portions of the Vedas are acceptable to me. However, some portions of the Vedas are, at first sight, self - contradictory' (Vivekananda Sahitya Sarwaswam vol. 4, Issue 55) will serve in breaking the spear-head of the claim that the Vedas comprise, in their totality, the divine messages.
Generally speaking, the Shruthi comprises of books which present the actual and existing beliefs and practices that once prevailed in India. However, vague signs if messages received by the Prophets who were sent to India can be seen in them. But the claim that these are completely divine is, however, without foundation.