Valmiki Ramayana Ayodhya Kanda Sarga 79 Shloka 13

शिल्पिभि: by the artisans, पन्थाः road, क्रियताम् let it be laid, विषमाणि uneven ground, समानि be levelled, दुर्गविचारकाः judging the inaccessible terrains, रक्षिणश्च guards, पथि on the way, अनुसम्यान्तु be followed.

Let the road be aligned by artisans and uneven ground be levelled. The guards who judge the inaccessible terrains should follow them on their way.