Valmiki Ramayana Yuddha Kanda Sarga 71 Shloka 76

एवम् in that way, विधाय knowing, आस्यम् face, विनम्य bending, भुजावुभौ both shoulders, नियम्य च setting right, सः he, रथोपस्थम् on the rear of the chariot, आस्थाय settled, रथेन from chariot, प्रचचार ह started to move.

Having spoken that way bending his face setting both shoulders right, he settled at the rear end of the chariot started to move from the chariot.