Valmiki Ramayana Yuddha Kanda Sarga 106 Shloka 25
Original Shlokaरथंशीघ्रमिदंसूतराघवाभिमुखंनय । नाहत्वासमरेशत्रून्निवर्तिष्यतिरावणः ।।6.106.25।।
1 source checked for this shloka
सूत charioteer इमम् this, रथम् chariot, शीघ्रम् quickly, राघवाभिमुखम् towards Raghava, नय as a policy, रावणः Ravana, समरे in battle, शत्रून् enemy, अहत्वा without putting an end, न निवर्तिष्यति never returns back
"Quickly drive the chariot towards Raghava. As a policy, Ravana would never turn back on the battlefield without putting an end to the enemy."