Pinaka or Shiva Dhanush is the bow of the Hindu god Shiva. It was given by Shiva to his devotee King Devaraatha, the ancestor of King Janaka. It is mentioned in the Hindu epic Ramayana, when its hero Rama (another avatar of Vishnu) breaks it to win Janaka s daughter as his wife. Vishwakarma crafted two divine bows. He gave Sharanga to Lord Vishnu and Pinaka to Lord Shiva,who killed the demon tripurasura with it.