Krishna Avata Ends on Sony's Karn Serial

Shrikrishna while his Avatar was about to end, said to Arjun,"If someone's pre-planned and pre-defined Karma (deeds) are completed in this world and still he continues to stay on earth, then it creates unbalance in the nature. Everyone comes in this world (earth) for a specific task and after completing it, one has to go! Similarly, mine work for instilling religiousness (Dharma Sthapana) in this world has now been completed. So, I need to go now!"