of the Rigveda, though with the terminology of Rudra who evolved into Shiva worshipped as the lord of Yoga in later Hinduism. The Hindu scripture Rigveda uses words of admiration for the Yogis, whom it refers to as Kesin, and describes them as follows (abridged):

The term yogin appears in Katyayana Shrauta-sutra and chapter 6 of Maitri Upanishad, where the implied context and meaning is "a follower of the Yoga system, a contemplative saint".