Harihara is the name of a combined deity form of both Vishnu (Hari) and Shiva (Hara) from the Hindu tradition. Also known as Shankaranarayana ("Shankara" is Shiva, and "Narayana" is Vishnu), Harihara is thus worshipped by both Vaishnavites and Shaivities as a form of the Supreme God, as well as being a figure of worship for other Hindu traditions in general. Harihara is also sometimes used as a philosophical term to denote the unity of Vishnu and Shiva as different aspects of the same Supreme God.---Wikipedia.
Harihara is depicted in art as split down the middle, one half representing Shiva, the other half representing Vishnu. The Shiva half will have the matted locks of a yogic master piled high on his head and sometimes will wear a tiger skin, reserved for the most revered ascetics. Shiva's pale skin may be read as ash-covered in his role as an ascetic. The Vishnu half will wear a tall crown and other jewelry, representing his responsibility for maintaining world order. Vishnu's blue skin represents holiness. Broadly, these distinctions serve to represent the duality of humble religious influence in the ascetic and authoritative secular power in the king or householder. However, in other aspects Shiva also takes on the authoritative position of householder, a position which is directly at odds with the ascetic position depicted in his Harihara manifestation. (Wikipedia)
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