Narada Purana — Purva Bhaga, Shloka 22
Manvantaras and Indras; Sudharmā’s Liberation through Viṣṇu-Pradakṣiṇā; Supremacy of Hari-Bhakti
दशमो ब्रह्मसावर्णिर्द्धर्मसावर्णिकस्ततः । ततस्तु रुद्रसावर्णी रोचमानस्ततः स्मृतः ॥ २२ ॥
daśamo brahmasāvarṇirddharmasāvarṇikastataḥ | tatastu rudrasāvarṇī rocamānastataḥ smṛtaḥ || 22 ||
第十のマヌはブラフマ・サーヴァルニ、その後にダルマ・サーヴァルニカ。次いでルドラ・サーヴァルニが来て、その後に（マヌ）ローチャマーナが記憶される。
Sanatkumara (in dialogue with Narada)
Vrata: none
Primary Rasa: shanta
Secondary Rasa: adbhuta
FAQs
It preserves the Purāṇic map of cosmic time (manvantaras), showing that dharma and governance of the world proceed in ordered cycles under successive Manus.
Indirectly: by situating human religious life within manvantara cycles, it implies that bhakti and dharma are perennial and reappear across ages under different cosmic administrations.
Primarily Itihāsa–Purāṇa style chronology (useful for traditional calendrical and cosmological reckoning); it is not a direct teaching of a Vedāṅga like Vyākaraṇa or Jyotiṣa in this verse.