Valmiki Ramayana Kishkindha Kanda Sarga 31 Shloka 28
Original Shlokaसुग्रीवस्य प्रमादं च पूर्वजं चार्तमात्मवान्4.31.28।। बुद्ध्वा कोपवशं वीरः पुनरेव जगाम सः।
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आत्मवान् sensible, सः वीरः that warrior, सुग्रीवस्य Sugriva's, प्रमादम् dereliction, पूर्वजं च and his elder brother, आर्तम् helpless, बुद्ध्वा recognising, पुनरेव once again, क्रोधवशम् under the grip of anger, जगाम was drawn.
The sensible warrior, recognising Sugriva's dereliction of duty and his own brother's agony once again flew into fury.