Srimad Bhagvata Mahapurana: Book10: Chapter 64: Verses 1-13
The story of king Nrga
Sri Suka began again : Pariksit, on a certain day, Gada (Sri Krsna's younger brother), Pradyumna, Samba, Caru, Bhanu and other Yadava princes went to play in a garden. Having sported there for a pretty long time they felt thirsty and went to a well in search of water. They found the well dry and noticed a strange animal (fallen) in it. It was a chameleon as big as a rock. Their mind was struck with wonder at the sight. Moved with pity they tied it with thongs of leather and ropes of fibres and attempted to take it out of the well but could not. Full of curiosity they (went to Sri Krsna and) reported this incident to Him. Bhagavan Sri Krsna of lotus-like eyes, the almighty Creator and Protector of the universe (went to the well), saw the animal and lifted it up with His left hand by way of play. Touched by the hand of the glorious Lord, the animal forthwith cast off the form of a chameleon and was transformed into a celestial being adorned with wondrous jewels, clothes and garlands and possessed of a charming hue like that of molten gold. Although He knew the cause of his obtaining the form of a chameleon, yet in order to make the facts known to the people, Sri Krsna (the Bestower of Liberation) asked that shining person, "0 highly blessed one, who are you, possessed of this excellent form ? I surely reckon you to be a great god. Through what Karma were you condemned to this state ? Surely you did not deserve it, 0 highly virtuous soul We are keen to know your history.