purastāt savitur aruṇaḥ paścāc ca niyuktaḥ sautye karmaṇi kilāste
WORD BY WORD
TRANSLATION
Although Aruṇadeva sits in front of the sun-god and is engaged in driving the chariot and controlling the horses, he looks backward toward the sun-god.
PURPORT
In the Vāyu Purāṇa the position of the horses is described: