Valmiki Ramayana Kishkindha Kanda Sarga 44 Shloka 9
Original Shlokaसर्वथा निश्चितार्थोऽयं हनूमति हरीश्वरः। निश्चितार्थकरश्चापि हनूमान्कार्यसाधने।।4.44.9।।
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अयम् this, हरीश्वरः monkey king, सर्वथा all means, हनूमति Hanumanta, निश्चितार्थः sure, कार्यसाधने in accomplishing the task, हनुमान् Hanuman, निश्चितार्थकरश्चापि sure of accomplishing the task.
'This monkey king, Sugriva has confidence in Hanuman that he will by all means accomplish the task.'