Valmiki Ramayana Yuddha Kanda Sarga 79 Shloka 24

तदा then, रणाजिरे in the battlefield, धनुर्मुक्तः released from bow, ज्यातलयोः by the hand, स्वनोत्कृष्टः by the friction of bowstring, शब्दः sound, आकाशे sky, जीमूतयोरिव like thunder of cloud, श्रूयते च filled

Then the sound released by the friction of the bowstring and the hand (of the two heroes) filled the sky like thunder of clouds.