Nyaya - A thing remaining unchanged in form though it may be maimed in part.

एकदेशविकृतमनन्यवदिति न्यायः

A horse continues to be a horse, and is not transformed into an ass, though its tail may be cut off; or a man does not become a beast though he may lose one of his fingers. It is used to denote that external deformity is no indication of any change of the true nature of a thing.