Valmiki Ramayana Yuddha Kanda Sarga 43 Shloka 37
Original Shlokaततःक्रोधसमाविष्टःसुषेणोहरिपुङ्गवः । शिलांसुमहतींगृह्यनिशाचरमभिद्रवत् ।।6.43.37।।
1 source checked for this shloka
ततः thereafter, क्रोधसमाविष्टः overtaken by anger, हरिपुङ्गवः monkey leader, सुषेणः Sushena, महतीम् huge, शिलाम् rock, गृह्य seizing, निशाचरम् Rakshasa, अभिद्रवत् dropped.
Thereafter overtaken by anger, the monkey leader Sushena seized the huge rock from the Rakshasa and dropped it.