Valmiki Ramayana Ayodhya Kanda Sarga 14 Shloka 43
Original Shlokaइति तस्य वच श्श्रुत्वा सूतपुत्रो महात्मनः।।2.14.43।। स्तुवन्नृपतिशार्दूलं प्रविवेश निवेशनम्।
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सूतपुत्रः charioteer Sumantra, तस्य महात्मनः of that great Vasistha, इति in this way, वचः words, श्रुत्वा having heard, नृपतिशार्दूलम् tiger among kings, स्तुवन् while praising, निवेशनम् palace, प्रविवेश entered.
Having heard the words of the great Vasistha, charioteer Sumantra entered the inner apartment, singing the praise of this tiger among kings (Dasaratha).