Yuga-Vibhāga and Kāla-Pramāṇa
Measures of Time and the Four Yugas
दश चैवाधिका मासाः पितृसंख्येह संज्ञिताः / लौकिकेनैव मानेन हृब्दो यो मानुषः स्मृतः
daśa caivādhikā māsāḥ pitṛsaṃkhyeha saṃjñitāḥ / laukikenaiva mānena hṛbdo yo mānuṣaḥ smṛtaḥ
In the reckoning of the Pitṛs, ten months and additional months are spoken of; and the time known as ‘human’ is understood only by worldly measure.