A purba (Tibetan: phur ba. Sanskrit: kila) is a three-edged peg usually made from metal or wood originating with Indian Tantric Buddhism and related to ritual mandala construction. The 'kila' has sometimes been described in the West as a dagger with three blades. Considered the best of the metal 'kilas' are those created from meteorite iron. Sandalwood is also popular. The various tantra literature describes different mediums for construction based on function and ritual practice.
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