Varṇa (varṇa), in the context of Hinduism, refers to a social class within a hierarchical caste system. The ideology is epitomized in texts like Manusmriti, which describes and ranks four varnas, and prescribes their occupations, requirements and duties, or Dharma. Brahmins: Vedic scholars, priests or teachers. Kshatriyas: Rulers, administrators or warriors. Vaishyas: Agriculturalists, farmers or merchants. Shudras: Artisans, laborers or servants. This quadruple division is a form of social stratification, quite different from the more nuanced system Jātis which correspond to the European term "caste". The varna system is discussed in Hindu texts, and understood as idealised human callings. The concept is generally traced to the Purusha Sukta verse of the Rig Veda. The commentary on the Varna system in the Manusmriti is often cited. Counter to these textual classifications, many Hindu texts and doctrines question and disagree with the Varna system of social classification. In India, Communities which belong to one of the four varnas or classes are called savarna Hindus. The Dalits and tribals who do not belong to any varna were called avarna. The Sanskrit term varna is derived from the root , meaning "to cover, to envelop, count, classify consider, describe or choose". The word appears in the Rigveda, where it means "colour, outward appearance, exterior, form, figure or shape". The word means "color, tint, dye or pigment" in the Mahabharata. Varna contextually means "colour, race, tribe, species, kind, sort, nature, character, quality, property" of an object or people in some Vedic and medieval texts. Varna refers to four social classes in the Manusmriti. The earliest application to the formal division into four social classes (without using the term varna) appears in the late Rigvedic Purusha Sukta (RV 10.90.11–12), which has the Brahman, Rajanya (instead of Kshatriya), Vaishya and Shudra classes forming the mouth, arms, thighs and feet at the sacrifice of the primordial Purusha, respectively: 11.