The insistence on preserving pronunciation and accent as accurately as possible is related to the belief that the potency of the mantras lies in their sound when pronounced. The
shakhas thus have the purpose of preserving knowledge of uttering divine sound originally cognized by the
rishis. Portions of the
Vedantic literature elucidate the use of sound as a
spiritual tool. They assert that the entire cosmic creation began with sound: "By His utterance came the universe." (
Brihadaranyaka Upanishad 1.2.4). The
Vedanta-sutras add that ultimate
liberation comes from sound as well (anavrittih shabdat).
Katyayana likens speech to the supreme
Brahman. He uses the
Rigvedic verse – "Four are its horns, three its feet, two its heads, and seven its hands, roars loudly the threefold-bound bull, the great god enters mortals" (Rig-Veda, iv. 58, 3), to assert this claim. Katyayana explains that in the verse, the "four horns" are the four kinds of words i.e. nouns, verbs, prepositions, and particles; its "three feet" mean the three tenses, past, present and future; the "two heads" imply the eternal and temporary words, distinguished as the "manifested" and the "manifester"; its "seven hands" are the seven case affixes; "threefold bound" is enclosed in the three organs the chest, the throat, and the head; the metaphor "bull" (vrishabha) is used to imply that it gives fruit when used with knowledge; "loudly roars" signifies uttering sound, speech or language; and in "the great god enters mortals" entails that the "great god" speech, enters the mortals. Thus, primal sound is often referred to as
Shabda Brahman or "word as
The Absolute".
Maitri Upanishad states:
Mantras, or sacred sounds, are used to pierce through sensual,
mental and
intellectual levels of existence (all lower strata of consciousness) for the purpose of
purification and spiritual enlightenment. "By sound vibration one becomes liberated" (Vedanta-sutra 4.22). ==See also==