Vishwakarma crafted two divine bows. He gave Sharanga to Lord Vishnu and Pinaka to Lord Shiva. King Janaka of Mithila had a daughter named Sita. In earlier part of her life, Sita while playing with her sisters had unknowingly lifted the table over which the bow had been placed; which was something no one in the kingdom could do. This incident was however observed by Janaka and he decided to make this incident as the backdrop for Sita's swayamvara.