Skandapurana 1.4.41.57

1.4.41.57

oṃyasyāhuḥ sapta cchaṃdāṃsi rathe tiṣṭhaṃti vājinaḥ..
aruṇaḥ sārathiryasya rathavāho'grataḥ sthitaḥ.. 43.57 ..

'Oṃ, [to him] whose horses standing on the chariot, they say, are the seven meters; / whose charioteer is Aruṇa, standing in front drawing the chariot;