Manusmriti

siva.sh/manusmriti/9/301

कृतं त्रेतायुगं चैव द्वापरं कलिरेव च । राज्ञो वृत्तानि सर्वाणि राजा हि युगमुच्यते ॥ ३०१ ॥

sanskrit

The various ways in which a king behaves (resemble) the Krita, Treta, Dvapara, and Kali ages; hence the king is identified with the ages (of the world).

english translation

kRtaM tretAyugaM caiva dvAparaM kalireva ca | rAjJo vRttAni sarvANi rAjA hi yugamucyate || 301 ||

hk transliteration by Sanscript