Narasimha proves that cosmic justice cannot be outsmarted by clever legalistic loopholes or human ego.
Shrimad Bhagavata Purana (Canto 7, Chapters 8-10)
Slays Hiranyakashipu—who had boons preventing his death by man or beast, inside or outside, day or night, with weapons or hands—by appearing as a lion-man at twilight, on a doorway threshold, using his bare claws.