 धर्मोवैग्रसतेऽधर्मंततःकृतमभूद्युगम् ।।अधर्मोग्रसतेधर्मंततस्तिष्यःप्रवर्तते । 
 "When moral merit destroys unrighteousness, it is called Krtayuga. So also, when virtue gets eclipsed by unrighteousness, it is called Kaliyuga." 