One conversant with Brahma of sound succeeds in attaining to Supreme Brahma. Beginning with the rites of Garbhadhana, that body which the father creates with the help of Vedic Mantras is purified (after birth) by Vedic Mantras.
शब्दब्रह्मणि निष्णातः परं ब्रह्माधिगच्छति। शरीरमेतत् कुरुते यद् वेदे कुरुते तनुम्॥