Valmiki Ramayana Sundara Kanda Sarga 13 Shloka 28
Original Shlokaकृतज्ञस्सत्यसन्धश्च सुग्रीवः प्लवगाधिपः।।5.13.28।। रामं तथा गतं दृष्ट्वा ततस्त्यक्ष्यति जीवितम्।
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कृतज्ञः grateful, सत्यसन्धः truthful, प्लवगाधिपः leader of monkeys, सुग्रीवः Sugriva, तथा likewise, गतम् gone, रामम् Rama, दृष्ट्वा on seeing, ततः then, जीवितम् life, त्यक्ष्यति will give up.
"On seeing that Rama has ended his life, the grateful and truthful monkey leader, Sugriva will give up his life.