Mbh 12.267.5b

Verily, to this effect, O sire, I have been instructed by also our grandsire of olden days, who gave such assurances of harmlessness to people, moved by pity. Their words were, "In the Krita age, kings should rule their subjects by adopting ways that are entirely harmless. In the Treta age, kings conduct themselves according to ways that conform with righteousness fallen away by a fourth from its full complement. In the Dwapara age, they proceed according to ways conforming with righteousness fallen away by a moiety, and in the age that follows, according to ways conforming with righteousness fallen away by three-fourth. When the Kati age sets in, through the wickedness of kings and in consequence of the nature of the epoch itself, fifteen parts of even that fourth portion of righteousness disappear, a sixteenth portion thereof being all that then remains of it. If, O Satyavat, by adopting the method first mentioned (viz., the practice of harmlessness), confusion sets in, the king, considering the period of human life, the strength of human beings, and the nature of the time that has come, should award punishments.[1223] Indeed, Manu, the son of the Self-born, has, through compassion for human beings, indicated the way by means of which men may adhere to knowledge (instead of harmfulness) for the sake of emancipation."''"[1224]