Valmiki Ramayana Yuddha Kanda Sarga 104 Shloka 21

रावणकरात् from Ravana's hand, मुक्तम् discharged, विद्युन्मालासमावृतम् with circle of lightning and glowing covered, अष्टघण्टम् eight bells, महानादम् making loud noise, तत् that, वियद्गतम् the atmosphere, अशोभत shone

The trident discharged from Ravana's hand, made circles of lightning, and covered the atmosphere with its glow and shine along with eight bells making loud sounds.