Revākhaṇḍa ascribed to the Vāyupurāṇa (RKV) 19.34

19.34

tataḥ prasuptaḥ sahasā vibuddho rātrikṣaye devavaraḥ svabhāvāt /
vikṣobhayan bāhubhir arṇavāmbho jagatpraṇaṣṭaṃ salile vimṛśya //

Then, asleep, the best of gods was suddenly awakened by his inherent nature at the end of the night, / agitating the waters of the ocean with his arms, reflecting upon the world destroyed in the water.