Skandapurana 16.294.9

16.294.9

tato'sau dhvajamāhātmyājjāto'vanyāṃ narādhipaḥ ..
ṛtadhvajeti vikhyātaḥ saurāṣṭraviṣaye sudhīḥ ..
sa hi sphūrjaddhvajāgreṇa rathena paryaṭanmahīm .. 9 ..

Then, by the majesty of the banner, he was born on earth as a ruler of men, / the wise one known as Ṛtadhvaja in the Saurāṣṭra region; / he indeed roamed the earth in a chariot with a gleaming banner-tip. (9)