Valmiki Ramayana Yuddha Kanda Sarga 40 Shloka 21

र्वारणवारणाभै Sugriva and Ravana both, वारणवारणाभैः resisting each other, बाहूत्तमैः endowed with mighty arms, निवारयन्तौ keeping away each other, चिरेणकालेन for long time, तु, सम्प्रयुक्तौ engaged in combat, आशु swiftly, मण्डलमार्गम् going round and round, संचेरतुः remained moving.

Both Ravana and Sugriva endowed with mighty arms, were resisting each other, and keeping away one another engaging in comb at for a long time. They kept on moving, going around each other swiftly.