Where do the Transcendental Meditation mantras come from?

Some people say the TM mantras have roots in a religious tradition — is this true?

The mantras or sounds used in the Transcendental Meditation program come from a tradition of knowledge that is thousands of years old, the Vedic tradition, whose origins are buried in antiquity.

Scholars of the Vedic tradition recognize that these ancient mantras were originally used in a way that was not