Valmiki Ramayana Sundara Kanda Sarga 19 Shloka 4
Original Shlokaदशग्रीवस्तु वैदेहीं रक्षितां राक्षसीगणैः। ददर्श सीतां दुःखार्तां नावं सन्नामिवार्णवे।।5.19.4।।
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दशग्रीवस्तु even the tennecked Ravana on his part, राक्षसीगणैः by groups of shedemons, रक्षिताम् protected by, वैदेहीम् Vaidehi, दुःखार्ताम् tormented with grief, अर्णवे in the ocean, सन्नाम् drowned, नावमिव boat like, सीताम् Sita, ददर्श saw.
The tennecked Ravana, too, on his part saw Sita, tormented with grief, guarded by the shedemons like a boat sunk in the sea.