Although every Hindu must follow general moral codes, each has individual duties according to his or her own nature. These are called sva-dharma, literally "own duties." They are regulated by the system of four varnas (social classes) and four ashrams (stages of life).
The ideal varnasrama system is discussed here. (For more information on actual practice and related issues of caste and untouchability; please see Reincarnation and Samsara). Below we list the main duties of each of the four varnas.
The shudras are the only section of society allowed to accept another's employment; other varnas are occupationally and financially self-sufficient.
The vaishyas are the productive class. They and the two varnas below are called twice-born, indicating that they accept the sacred thread (symbolising spiritual initiation) and must perform certain rituals and rites of passage.
The kshatriyas are the nobility, the protectors of society. Though permitted a number of privileges, they are expected to display considerable strength of body and character.
The brahmanas provide education and spiritual leadership. They determine the vision and values of any society. Traditionally their basic needs were fulfilled so that they could dedicate themselves to their spiritual tasks.They are expected to live very frugally.
"It is better to perform one's prescribed duties, even though faulty, than another's duties. Destruction in the course of performing one's own duty is better than engaging in another's duties, for to follow another's path is dangerous."
Bhagavad-gita 3.35
"Brahmanas, kshatriyas, vaishyas, and shudras are distinguished by the qualities born of their own nature in accordance with the three material qualities."
Bhagavad-gita 18.41
See also: Bhagavad-gita 2.31–8, 4.13, 18.41–8
Many in the Epics. They usually relate to the warrior dharma, and also give insight into the characteristics of genuine brahmanas.
Hindu scholars contend that the original system was based on co-operation, mutual service to God, and commensurate rights and responsibilities. For example, although the warriors had great wealth and power, they were expected to be first into battle. The learned, brahmana class were given even greater respect but were required to have full control over mind and senses.
This is true, but needs careful understanding. Dharma is to be applied with consideration (See Common Misunderstandings, in the Values in Practice section).The whole Mahabharata explores the nuances of dharma, and how difficult it can be to determine what is right action. When there is confusion, decisions are usually made in consultation with brahmins and other spiritual authorities
Varnashrama Dharma, Varnashrama Dharama and Caste, and Caste and Untouchability.