Yuga-Vibhāga and Kāla-Pramāṇa
Measures of Time and the Four Yugas
त्रीण्येव नियुतान्याहुर्वर्षाणां मानुषाणि तु
trīṇyeva niyutānyāhurvarṣāṇāṃ mānuṣāṇi tu
In human years, they declare it to be three niyutas—three hundred thousand years.