Valmiki Ramayana Kishkindha Kanda Sarga 13 Shloka 16
Original Shlokaतस्य तद्वचनं श्रुत्वा राघवस्य महात्मनः। गच्छन्नेवाचचक्षेऽथ सुग्रीवस्तन्महद्वनम्4.13.16।।
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महात्मनः great soul, तस्य राघवस्य that Raghava's, तत् वचनम् those words, श्रुत्वा hearing, सुग्रीवः Sugriva, अथ then, गच्छन्नेव walking, तत् that, महत् extensive, वनम् forest, आचचक्षे started narrating.
On hearing great Rama's words while walking in the extensive forest, Sugriva started narrating: