Raja Yoga also known as Classical Yoga or simply Yoga is one of the six orthodox (astika) schools of Hindu philosophy, being described Patanjali in his Yoga Sutras. It is also occasionally referred to as A??anga (eight-limbed) yoga because there are eight aspects to the path to which one must attend. Raja yoga is concerned primarily with the cultivation of the mind using meditation (dhyana) to further one’s acquaintance with reality and finally achieve liberation.
The term Raja Yoga is a retronym, introduced in the 15th century Hatha Yoga Pradipika to differentiate the school based on the Yoga Sutras from the new current of Hatha Yoga.
Concept of Raja Yoga
Raja-Yoga is principally concerned with the mind. The mind is traditionally perceived as the ‘king’ of the psycho-physical structure which does its bidding (whether or not one has realized this). Because of the relationship between the mind and the body, the body must be ‘tamed’ first through self-discipline and purified by various means (see Hatha Yoga). A good level of overall health and psychological integration must be achieved before the deeper aspects of yoga can be pursued. Humans have all sorts of addictions and temptations and these preclude the attainment of tranquil abiding (meditation). Through restraint (yama) such as celibacy, abstaining from drugs and alcohol and careful attention to one’s actions of body, speech and mind, the human being becomes well to practise meditation. This yoke that one puts upon oneself is the alternate meaning of the word yoga.
Patanjali’s Yoga Sutras start with the statement yogas citta-vtti-nirodha (1.2), “yoga limits the oscillations of the mind”. They proceed on to detailing the ways in which mind can create false ideations and advocate meditation on real objects, which process, it is said, will lead to a spontaneous state of quiet mind, the “Nirbija” or “seedless state”, in which there is no mental object of focus. Practices that serve to maintain for the individual the ability to check this state may be considered Raja Yoga practices. Thus Raja Yoga encompasses and differentiates itself from other forms of Yoga by encouraging the mind to avoid the sort of absorption in obsessional practice (including other traditional yogic practices) that can generate false mental objects. In this angle, Raja Yoga is “king of yogas”: all yogic practices are seen as potential tools for obtaining the seedless state, itself considered to be the first point in the quest to cleanse Karma and obtain Moksha or Nirvana. Traditionally, schools of yoga that label themselves “Raja” offer students a mix of yogic practices and (hopefully) this philosophical viewpoint.
Karma yoga also known as Buddhi Yoga or the “discipline of action” is centered on the teachings of the Bhagavad Gita, a sacred Sanskrit scripture of Hinduism. One of the four pillars of yoga, Karma yoga concentrates on the adherence to duty (dharma) while remaining detached from the reward. It states that one can attain Moksha (salvation) or love of God (bhakti) by performing their duties in a selfless manner for the pleasure of the Supreme. Karma Yoga is an inherent part of many derivative types of yoga, such as Natya Yoga.

Concept Of Karma Yoga
The word Karma is mentioned from the Sanskrit Kri, meaning ‘to do’, in its most basic sense karma simply means action, and yoga translates to union. Therefore, Karma yoga literally translates to the path of union through action. It is described as a way of acting, thinking and willing by which one acts in accordance with one’s duty (dharma) with no consideration of personal selfish desires, likes or dislikes, i.e. acting without being emotionally involved to the fruits of one’s deeds.
In the case of Arjuna in the Gita, this translated to his fighting in the oncoming war to uphold the righteous cause in accordance with his duty as a warrior; even if out of compassion, he did not want to battle with his relatives and teachers on the other side.
Krishna then goes on to tell how Arjuna should surrender the fruits of his actions (good or bad) to himself (as the Supreme Person or avatara) :
Krishna describes that allocated work done without expectations, motives, or anticipation of its outcome purifies one’s mind and slowly makes an individual fit to see the value of reason. He states that it is not necessary to remain in external solitude, or actionless, in order to practice a spiritual life, with the state of action or inaction is solely determined in the mind.
In order to attain the perfection of life, Krishna describes it is important to control all mental desires and tendencies to enjoy pleasures of the senses. The practice of Karma Yoga in everyday life makes an individual fit through action, meditation and devotion to sharpen his reasoning, develop intuitive power of acquiring knowledge and to transcend the mind itself.