Valmiki Ramayana Yuddha Kanda Sarga 20 Shloka 30
Original Shlokaततोऽब्रवीद्वालिसुतस्त्वङ्गदोहरिसत्तमः । नायंदूतोमहाराजचारिकःप्रतिभातिमे ।।6.20.30।।
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ततः that, वालिसुतः Vali's son, हरिसत्तमः noble one of the Vanaras, अङ्गदः Angada, अब्रवीत् said, महाराज: king, अयम् this, दूतः messenger, न: not, चारिकः spy, मे: to me, प्रतिभाति: it appears.
"Then Angada, the noble one among Vanaras, the son of Vali, said," O King, to me it appears that he is not a messenger but a spy."