the kernel of Vedic tradition, as represented by the Rigveda, has come down to us, with a high degree of fixity and remarkable care for verbal integrity, from a period which can hardly be less remote than 1000 B.C.
It is only natural that a sacred collection of poetry, historical in its origin, and the heritage of oral tradition before the other Vedas were composed and the details of the later ritual practice were fixed, should have continued to be preserved more accurately than texts formed mainly by borrowing from it hymns which were arbitrarily cut up into groups of verses or into single verses, solely in order to meet new liturgical needs. For those who removed verses of the Rigveda from their context and mixed them up with their own new creations would not feel bound to guard such verses from change as strictly as those who did nothing but continue to hand down, without any break, the ancient text in its connected form. The control of tradition would be wanting where quite a new tradition was being formed.
The criticism of the text of the Rigveda itself is concerned with two periods. The first is that in which it existed alone before the other Vedas came into being; the second is that in which it appears in the phonetically modified form called the Saṃhitā text, due to the labours of grammatical editors. Being handed down in the older period exclusively by oral tradition, it was not preserved in quite authentic form down to the time of its final redaction. It did not entirely escape the fate suffered by all works which, coming down from remote antiquity, survive into an age of changed linguistic conditions. Though there are undeniable corruptions
