Valmiki Ramayana Sundara Kanda Sarga 12 Shloka 22
Original Shlokaप्रमथ्य राक्षसेन्द्रेण नागकन्या बलाद्धृताः। दृष्टा हनुमता तत्र न सा जनकनन्दिनी।।5.12.22।।
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राक्षसेन्द्रेण by the demon king, प्रमथ्य defeating, बलात् forcefully, हृताः abducted, नागकन्याः daughters of nagas, तत्र there, हनुमता by Hanuman, दृष्टाः seen, सा that, जनकनन्दिनी न not the delight of Janaka.
Hanuman saw the daghters of nagas kidnapped by Ravana forcibly after victory in war but not Sita, the delight of Janaka.