Yuga-Vibhāga and Kāla-Pramāṇa
Measures of Time and the Four Yugas
विष्णोरंशेन जायन्ते पृथिव्यां चक्रवर्त्तिनः / मन्वन्तरेषु सर्वेषु अतीतानागतेष्विह
viṣṇoraṃśena jāyante pṛthivyāṃ cakravarttinaḥ / manvantareṣu sarveṣu atītānāgateṣviha
From a portion of Viṣṇu are born on earth the cakravartin sovereigns; in every manvantara—past and yet to come—so it is here.