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The word v?hegur? is traditionally explained as being composed of v?he "wondrous", gu "darkness", and ru "light", together said to carry the meaning - The wondrous Lord who dispells the darkness of ignorance and bestows the light of truth, knowledge and enlightenment.
The word Vaheguru or Waheguru is also used in Sikhism as a main mantra, called gurmantra or gur mantar.