Valmiki Ramayana Kishkindha Kanda Sarga 65 Shloka 20

वाक्यकोविदः skilful at speech, जाम्बवान् Jambavan, तम् him, हरिश्रेष्ठम् best of monkeys, उवाच said, हर्यृक्षसत्तम best among bears and monkeys, गमने I am going to fly, तव your, शक्तिः energy, ज्ञायते is known.

Jambavan who was skilful in speech spoke to that great Angada, 'O leader among monkeys and bears your energy to cover this distance is wellknown to us'.