pursuit of spiritual knowledge. Meditation The third pada, states George Thibaut, opens a new section and theme in chapter 3 of the Brahma Sūtras, asserting that meditation is central to the Vedic texts, and summarizing the Vedic theories, from different Shakha (Vedic schools), on "how the individual soul is enabled by meditation on Brahman to obtain final release". These sutras constitute a significant part of the text, extensively refer to the oldest Upanishads, and their commentaries by different Vedanta sub-schools have been extensive, signifying the large historic tradition around meditation, and acceptance of Yoga-sutras teachings in Vedanta. Meditation is defined in Vedanta texts of commentary on the Sutras, states Klaus Witz, as "a continuous succession of comparable basic conceptions, beliefs, not interspersed with dissimilar ones, which proceeds according to the scriptures and relates to an object enjoined in the scriptures". It is described by Vedantins as a practice of concentrating on an object of meditation, states Witz, a state of "absorption or immersion into essentially a single thought" and "concentrating on it, excluding conventional notions, till one if as completely identified with it as with one's body". While this practice is discussed in Vedic texts, their formulations were differently described by different Vedic schools. The Brahma-sutra, in Adhikaranas of third and fourth pada, states Thibaut, assert that there is no contradiction in these teachings and that "the different Upanishads have to be viewed as teaching the same matter, and therefore the ideas must be combined in one meditation". The most referred to texts in these sections are the Brihadaranyaka Upanishad, the Chandogya Upanishad, the Kaushitaki Upanishad, the Katha Upanishad, and the non-Upanishadic parts of Shatapatha Brahmana and Aitereya Aranyaka. The topic of meditation, state the Brahma-sutras, is the spiritual knowledge of Brahman; the object of this knowledge, states Thibaut, is "Brahman viewed as the inner Self of all". The Brahma Sutras, in addition to recommending meditation, suggest that rituals and rites are unnecessary because it is knowledge that achieves the purpose. In sutras 3.4.26 and 3.4.27, the text adds that rituals, however, can spiritually prepare a mind, remove impurities within, empower calmness and distractions from sensory pursuits, and therefore assist in its ability to meditate and gain the ultimate knowledge. The text also discusses, in sutras 3.4.28 to 3.4.31 whether there are restrictions on food (meat) one can ingest, during the spiritual journey. The sutras, translates Thibaut, derive from the