The Brahman priest (brahma) being thus the recognized head of the sacerdotal order (brahma), which itself is the visible embodiment of sacred writ and the devotional spirit pervading it (brahma), the complete realization of theocratic aspirations required but a single step, which was indeed taken in the theosophic speculations of the later Vedic poets and the authors of the Brahmanas (q.v.), viz.
It is, then, to one or other of those three collections of sacred texts and the respective class of priests, that the existing Brahmanas attach themselves.
The Udgatri's duties being mainly confined to the chanting of hymns made up of detached groups of verses of the Rigveda, as collected in the Samaveda-samhita, the more important Brahmanas of this sacerdotal class deal chiefly with the various modes of chanting, and the modifications which the verses have to undergo in their musical setting.
As regards the Brahmanas of the Rigveda, two of such works have been handed down, the Aitareya and the Kaushitaki (or Sankhayana)-Brahmanas, which have a large amount of their material in common.
It is, however, to the Brahmanas and Sutras of the Yajurveda, dealing with the ritual of the real offering-priest, the Adhvaryu, that we have to turn for a connected view of the sacrificial procedure in all its material details.