ṚV, 1, 33, 14.1 āvaḥ kutsam indra yasmiñcākan prāvo yudhyantaṃ vṛṣabhaṃ daśadyum /

ṚV, 6, 26, 4.1 tvaṃ ratham pra bharo yodham ṛṣvam āvo yudhyantaṃ vṛṣabhaṃ daśadyum /