Nandi (Sanskrit: नन्दी) is the name for the bull which serves as the mount (Sanskrit: Vahana) of the god Shiva and as the gatekeeper of Shiva and Parvati. In Hindu Religion, he is the chief guru of eighteen masters (18 siddhas) including Patanjali and Thirumular. Temples venerating Shiva display stone images of a seated Nandi, generally facing the main shrine.
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