Mahabharata 7.38.29

तौ मण्डलानि चित्राणि रथाभ्यां सव्यदक्षिणम्चरमाणावयुध्येतां रथशिक्षाविशारदौ

tau maṇḍalāni citrāṇi rathābhyāṃ savyadakṣiṇamcaramāṇāvayudhyetāṃ rathaśikṣāviśāradau

Our plain-language meaning of this verse is waiting for scholar review.