Karma in Hinduism of their past lives and that one would have to transmigrate to another body in their next life, it is often used in the broader sense as action or reaction. Thus, karma in Hinduism may mean an activity, an action or a materialistic activity. Often with the specific combination it takes specific meanings, such as "karma-yoga" or "karma-kanda" means "yoga or actions" and "path of materialistic activity" respectively. Yet another example is Nitya karma, which describes rituals which have to be performed daily by Hindus, such as the Sandhyavandanam which involves chanting of the Gayatri Mantra. Other uses include such
Vedas and "Know your Ātman" their thematic focus. The Upanishads are the foundation of Hindu philosophical thought and its diverse traditions. Of the Vedic corpus, they alone are widely known, and the central ideas of the Upanishads have influenced the diverse traditions of Hinduism. "Aranyakas" are sometimes identified as "karma-kanda" (ritualistic section), while the Upanishads are identified as "jnana-kanda" (spirituality section). In an alternate classification, the early part of Vedas are called Samhitas and the commentary are called the Brahmanas which together are identified as the ceremonial "karma-kanda", while "Aranyakas" and "Upanishads" are referred to as the "jnana-kanda". The Vedangas developed