Hindu texts Vedas: the Rigveda, the Yajurveda, the Samaveda and the Atharvaveda. Each Veda has been subclassified into four major text types – the Samhitas (mantras and benedictions), the Aranyakas (text on rituals, ceremonies, sacrifices and symbolic-sacrifices), the Brahmanas (commentaries on rituals, ceremonies and sacrifices), and the Upanishads (text discussing meditation, philosophy and spiritual knowledge). The Upanishads are a collection of Hindu texts which contain some of the central philosophical concepts of Hinduism. The Upanishads are commonly referred to as "Vedānta", variously interpreted to mean either the "last chapters, parts of the Veda" or "the object, the highest purpose of the Veda".
Historical Vedic religion the textual evidence suggests significant differences between the two. The Vedic religion is described in the Vedas and associated voluminous Vedic literature preserved into the modern times by the different priestly schools. The Vedic religion texts are cerebral, orderly and intellectual, but it is unclear if the theory in diverse Vedic texts actually reflect the folk practices, iconography and other practical aspects of the Vedic religion. The evidence suggests that the Vedic religion evolved in "two superficially contradictory directions", state Jamison and Witzel. One part evolved into ever more "elaborate, expensive, and specialized system of rituals", while another part questioned