Yamuna is a sacred river in Hinduism and the main tributary of the Ganges (Ganga), the holiest river of Hinduism. The river worshipped as a Hindu goddess called Yamuna. In the Vedas, Yamuna is known as Yami, while in later literature, she is called Kalindi.
In the Vedas, Yami is associated with her twin brother and partner Yama, the god of death. Later, she is associated with the god Krishna as one of Ashtabharya, his consort as well and plays an important role in his early life as a river. Bathing and drinking Yamuna's waters is regarded to remove sin.
Yamuna's iconographic depiction is seen on temple doorjambs, along with that of Ganga (the goddess of the Ganges), since the Gupta era. The Agni Purana describes Yamuna's iconography. She is depicted as black in complexion and stands on her mount, the tortoise, holding a water pot in her hand. In an ancient painting she is shown as a beautiful maiden standing on the banks of the river.
Yamuna is described as the daughter of the sun god Surya (though some say that she was the daughter of Brahma) and his wife Saranyu (Sanjna in later literature), the goddess of the clouds, and the twin sister of Yama, the god of death. Her other brothers include Vaivasvata Manu, the first man and the twin Ashvins, divine doctors. She is described as Surya's favourite child. As the daughter of Surya, she is also called as Suryatanaya, Suryaja and Ravinandini.
Hinduism is a religion, or a way of life, found most notably in India and Nepal. Although Hinduism contains a broad range of philosophies, it is a family of linked religious cultures bound by shared concepts, recognisable rituals, cosmology, shared textual resources, pilgrimage to sacred sites and the questioning of authority. It includes various denominations each with an interwoven diversity of beliefs and practices.
Hinduism has been called the "oldest religion" in the world, and some practitioners and scholars refer to it as Sanātana Dharma, "the eternal law" or the "eternal way" beyond human origins. Scholars regard Hinduism as a fusion or synthesis of various Indian cultures and traditions, with diverse roots and no founder. This "Hindu synthesis" started to develop between 500 BCE and 300 CE, after the Vedic times. Hinduism prescribes the eternal duties, such as honesty, refraining from injuring living beings (ahimsa), patience, forbearance, self-restraint, compassion, among others.