Matsya Purana — Account of the Manvantaras: Manus
ईष ऊर्जश्च तर्जश् च शुचिः शुक्रस्तथैव च मधुश् च माधवश्चैव नभस्यो ऽथ नभास्तथा //
īṣa ūrjaśca tarjaś ca śuciḥ śukrastathaiva ca madhuś ca mādhavaścaiva nabhasyo 'tha nabhāstathā //
These are (also) the month-names: Īṣa, Ūrja, Tarja, Śuci, Śukra, as well as Madhu and Mādhava; and then (the months called) Nabhasya and Nabhas too.
It does not describe Pralaya directly; it supports cosmic order by listing sacred month-names used to structure time for ritual and dharma across cycles.
By naming the months, it underpins correct scheduling of vows, donations, festivals, and governance-related rites—key duties for householders and kings who must act in harmony with calendrical time.
The verse is primarily calendrical, but it is ritually significant because temple consecrations, fasts, and seasonal observances are prescribed by month in Purāṇic practice (useful for planning rites and installations).