The kīla (Sanskrit Devanagari: कील; IAST: kīla; Tibetan: ཕུར་བ, Wylie: phur ba, pronunciation between pur-ba and pur-pu, alt. transliterations and English orthographies: phurpa, phurbu, purbha, or phurpu) is a three-sided peg, stake, knife, or nail-like ritual implement traditionally associated with Indo-Tibetan Buddhism, Bön, and Indian Vedic traditions. The kīla is associated with the meditational deity (Srkt: ishtadevata, Tib. yidam) Vajrakīla (वज्रकील) or Vajrakīlaya (Tib. Dorje Phurba) according to the means for attainment Mahayoga class. Vajrakilaya is the Buddha's activity natural expression representation.