Padmanabha, a devotee of Vishnu, belonged to a Brahmin
family of Chakrapushkarini. Though poor, he was kind, honest, and just. He only wished to the Almighty once. Yet he knew that God did not
appear before all. So Padmanabha absorbed himself in prayers. When his
prayers reached their peak Vishnu appeared and blessed him with the boon
of remaining alive through many ages. However, one day, a demon attacked
him. Fearing for his life he began taking the lord's name. Vishnu killed
the demon with his Sudarshan Chakra, the divine wheel.
This demon was the demi-god Sundar, whom Vasistha had cursed to change
into a demon. He was to be freed only when Vishnu's chakra severed his
head. Saluting the chakra for saving him Padmanabha prayed that it would
protect mankind. The chakra entered the village of Pushkarini, which
hence came to be known as Chakrapushkarini.