व्यासशिष्योत्पत्तिवर्णन (Origins/Enumeration of Vyāsa’s Disciplic Succession) — Chapter on Vedic Transmission Lineages
मन्वन्तरास्तु संख्याताः संख्यानार्थविशारदैः / त्रिंशत्कोट्यस्तु संपूर्णा संख्याताः संख्याया द्विजैः
manvantarāstu saṃkhyātāḥ saṃkhyānārthaviśāradaiḥ / triṃśatkoṭyastu saṃpūrṇā saṃkhyātāḥ saṃkhyāyā dvijaiḥ
Those skilled in the meaning of numbers have reckoned the Manvantaras; the twice-born have counted the complete total as thirty koṭis.