Taittiriya Upanishad is part of the Taittiriya Aranyaka and belongs to the
. This Upanishad
is divided into three sections called Vallis, that is, the Siksa Valli, Brahmananda Valli and Bhrugu Valli. Siksa Valli explains the science of phonetics and pronunciation. Brahmananda and Bhrugu vallis focus on the knowledge of the Supreme Self. Om or Aum is emphasized in this Upanishad.