The necessity of following scriptures cuts across sectarian boundaries

In India there are many parties of spiritual understanding, generally classified as two: the impersonalist and the personalist. Both of them, however, lead their lives according to the principles of the Vedas. Without following the principles of the scriptures, one cannot elevate himself to the perfectional stage. One who actually, therefore, understands the purport of the shastras is considered fortunate.

– Bhagavad Gita As It Is, 16.24 purport