 They are attached to the Brahmanas, and [are] intended for study in the forest by brahmanas who have retired from the distractions of the world'.As illustrated below, the Taittiriya Aranyaka contains a Brahmana text of its own, the Pravargya Brahmana, as well as two Upanishads, the Taittiriya Upanishad (a Muktika or primary Upanishad) and the Mahanarayana Upanishad (a minor Vaishnava Upanishad).R.