Valmiki Ramayana Ayodhya Kanda Sarga 40 Shloka 22

सूत O charioteer, वाजिनाम् horses, रश्मीन् reins, संयच्छ control, शनैः शनैः slowly, slowly, याहि go, रामस्य Rama's, मुखम् face, द्रक्ष्यामः we will see, नः for us, दुर्दर्शम् difficult to see, भविष्यति will become.

O charioteer, control the reins of the horses and go slow so that we may look at the face of Rama, for soon we will not be able to see him.