Skandapurana 6.3.230.19

6.3.230.19

sārasvataṃ cāṣṭarudraṃ sāvitraṃ somasaṃjñitam .
śivakhātaṃ mahātīrthaṃ rudrāvartaṃ dvijottamāḥ .. 230.19 ..

and Sārasvata, Aṣṭarudra, Sāvitra, and the one named Soma, / the great sacred ford of Śivakhāta, and Rudrāvarta, O best of twice-born;