Yuga-Vibhāga and Kāla-Pramāṇa
Measures of Time and the Four Yugas
सर्वलक्षणसम्पूर्मा न्यग्रोधपरिमण्डलाः / न्यग्रोधौ तु स्मृतौ बाहू व्यामो न्यग्रोध उच्यते
sarvalakṣaṇasampūrmā nyagrodhaparimaṇḍalāḥ / nyagrodhau tu smṛtau bāhū vyāmo nyagrodha ucyate
They are complete in every auspicious mark, of the measure called nyagrodha-parimaṇḍala (like the banyan’s full round). The two arms are remembered as “nyagrodha,” and a single vyāma is also called “nyagrodha.”