Yoga, as a system of philosophy and way of life, is one of the most ancient and noble gifts of India to the world. Yoga is more common among people as a physical exercise that helps one to tame his mind and body. Yet in the philosophical tradition of India it has an important status as any other school of thought. This article addresses Yoga as it is a philosophical discipline where the antiquity of Yoga as a word and concept, the contribution of PatañjalÄ« to the system of Yoga, the nature of Yoga as it is defined by PatañjalÄ« in his YogasÅ«tras and aá¹£tāṅgayoga are elaborated. Its metaphysical affinity with the system of Saá¹…khya is detailed. A special attempt is done to address the age old enigma of Yoga namely the status of God in Yoga on the basis of teachings of PatañjalÄ« in the YogasÅ«tras.