Valmiki Ramayana Yuddha Kanda Sarga 65 Shloka 56

दिवि sky, वारिदस्य rumbling like, निनादंयथा sound, तस्य those, घोरम् dreadful, निनदम् roar, ते they, बहवः many, प्लवङ्गाः Vanaras, निकृत्तमूलाः whose roots have been severed, शालवृक्षाःइव like Sala trees, धरण्याम् पेतुः fell on ground.

Hearing the dreadful roar of Kumbhakarna, that resembled the rumbling of clouds, many Vanaras fell on the ground like severed Sala trees.