Darbha or Kusha grass mat is sacred, which is often used by sages when performing meditation. In english commonly known by halfa grass, big cordgrass and salt reed grass. This grass mat was used by Buddha for his meditation and attained enlightenment under Bodhi tree. Even Lord Krishna said in Bhagawad gita recommended darbha mat as part of the ideal seat for meditation. Darbha is used as mat, ring on right hand finger while chanting vedic mantras, performing homam and religious rituals. All kind of evil forces like ghosts, spirits, demons etc keep away from the place where it is used.