The Persian Sufis call it ázádigi or unattachment of the soul to any worldly object.
IX. Origin of Yoga in the Vedas.
Not in the Vedic Period. The origin of yoga meditation is placed at a period comparatively less ancient than the earliest Sanhita or hymnic period of vedic history, when the Rishis followed the elementary worship of the physical forces, or the Brahmanic age when they were employed in the ceremonial observances.
Some Traces of it.There are however some traces of abstract contemplation “dhyána yoga” to be occasionally met with in the early Vedas, where the Rishis are mentioned to have indulged themselves in such reveries. Thus in the Rig Veda—129. 4. सतो वन्धुमसति निरविन्दन् हृदि प्रतीष्य कवयो मनीषा ।
“The poets discovered in their heart, through meditation, the bond of the existing in the non-existing.” M. Müller. A. S. Lit. (p. 19.)
The Gáyatrí Meditation. We have it explicitly mentioned in the Gáyatrí hymn of the Rig Veda, which is daily recited by every Brahman, and wherein its author Viswámitra “meditated on the glory of the Lord for the illumination of his understanding” भर्गो देवस्य धीमहि । But this bespeaks a development of intellectual meditation “jnana yoga” only, and not spiritual as there is no prayer for (मुक्ति) liberation.
Áranyaka Period. It was in the third or Áranyaka period, that the yoga came in vogue with the second class of the Atharva Upanishads, presenting certain phases in its successive stages, as we find in the following analysis of them given by Professor Weber in his History of Ancient Sanskrit Literature. This class of works, he says, is chiefly made up of subjects relating to yoga, as consisting in divine meditation and giving up all earthly connections. (Ibid p. 163).
Yoga Upanishads. To this class belong the Jábála, Katha—sruti, Bhallavi, Samvartasruti, Sannyása, Hansa and Paramhansa Upanishads, Srimaddatta, the Mándukya and Tarkopanishads, and a few others, (Ibid. p. 164). It will exceed our bounds to give an account of the mode of yoga treated in these treatises, which however may be easily gathered by the reader from a reference to the Fifty two Upanishads lately published in this city.
Their different modes of yoga. Beside the above, we find mention of yoga and the various modes of conducting it in some other Upanishads, as given below by the same author and analyst. The Kathopanishad or Kathavallí of the Atharva Veda, treats of the first principles of Deistic Yoga. Ibid. p. 158.
The Garbhopanishad speaks of the Sánkhya and Pátanjali yoga systems as the means of knowing Náráyana. (Ibid. p. 160). The Brahmaopanishad, says Weber, belongs more properly to the yoga Upanishads spoken of before. (Ibid. p. 161).