Valmiki Ramayana Sundara Kanda Sarga 1 Shloka 108
Original Shlokaस तमुच्छ्र्रतमत्यर्थं महावेगो महाकपिः।।5.1.108।। उरसा पातयामास जीमूतमिव मारुतः।
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महावेगः swift in action, सः महाकपिः that great vanara, अत्यर्थम् instantly, उच्छ्रितम् risen, तम् him, मारुतः the wind, जीमूतमिव like a cloud, उरसा with the chest, पातयामास pushed it down.
The great vanara,who was swift in action felled down the mountain that had risen high instantly with his chest just as the wind would strike a cloud.