Virtue then knew no decrease. It was for this reason that Yuga was called Krita (perfect). In course of time it lost all its attributes.
न तत्रधर्माः सीदन्ति क्षीयन्ते न च वै प्रजाः। ततः कृतयुगं नाम कालेन गुणतां गतम्॥