Valmiki Ramayana Kishkindha Kanda Sarga 48 Shloka 13
Original Shlokaतस्य तस्मिन्वने पुत्रो बालष्षोडशवार्षिकः। प्रणष्टो जीवितान्ताय क्रुद्धस्तत्र महामुनिः।।4.48.13।।
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तस्मिन् वने in that forest, तस्य his, षोडशवार्षिकः sixteen years old, पुत्रः son, बाल: young boy, तत्र there, जीवितान्ताय died, प्रणष्टः was lost, महामुनिः great sage, क्रुद्धः enraged.
The great sage was enraged because he had lost his sixteenyearold son in the forest.