Revākhaṇḍa ascribed to the Vāyupurāṇa (RKV) 230.19

230.19

sārasvataṃ cāṣṭarudraṃ sāvitraṃ somasaṃjñitam /
śivakhātaṃ mahātīrthaṃ rudrāvartaṃ dvijottamāḥ //

Sārasvata, Aṣṭarudra, Sāvitra, and that named Soma, / the great pilgrimage place Śivakhāta, and Rudrāvarta, O best of the twice-born;