Karma yoga also called ‘Buddhi Yoga’ or the "discipline of action" is based on the teachings of Lord Krishna in Bhagavad Gita, a holy Sanskrit scripture of Hinduism. The word ‘Kri’ means 'to do' in Sanskrit and the karma means action, and yoga indicates to union. Therefore ‘Karma yoga’ means ‘the path of union through action’. It is portrayed as a way of acting, thinking and willing by which one acts in accordance with one's duty (dharma).
Karma yoga is one of the four pillars of yoga and hubs on the adherence to task (dharma) while remaining detached from the reward. It utters that one can experience salvation (Moksha) or love (bhakti) of God by executing their duties in a generous manner in order to get the pleasure of the God, which is the welfare of the world. Karma Yoga is an intrinsic part of many derivative types of yoga, such as Natya Yoga.
Karma Yoga is a system which develops immunity to the reactive and negative components of an action. This awareness of action leads to a greater ability to manage mental associations in the form of desires, ambitions, ego and other personality complexes.
The main endeavor of Karma Yoga is to achieve liberty from the repression of karma which restricts and inhibits dynamic, creative and constructive expression in life. In the ‘Bhagavad Gita’ lord Sri Krishna has accentuated the need for action as a means to become truly human and achieve celestial grace. Karma Yoga is a sadhana and not a practice. The state of Karma Yoga can be attained through seva.