Chāndogya Upanishad / Sri Aurobindo
CWSA 18 · Translations and Commentaries from Manuscripts
Chhandogya Upanishad
pp. 250–257
1. Worship ye OM, the eternal syllable. OM is Udgitha, the chant of Sama-veda; for with OM they begin the chant of Sama. And this is the exposition of OM.