Valmiki Ramayana Yuddha Kanda Sarga 69 Shloka 46

केचित् some, प्लवङ्गमाः monkeys, आकाशम् sky, आविश्य springing, केचित् some, उर्व्याम् staying on earth, सङ्कृद्धाः highly enraged, द्रुमशिलायुधाः trees and rocks as weapons, रक्षस्सैन्येषु Rakshasa army, चेरुः ranged.

Some monkeys springing into the sky, while some staying on earth, with trees, rocks as weapons, enraged, ranged the Rakshasa army.