Valmiki Ramayana Sundara Kanda Sarga 58 Shloka 76
Original Shlokaउक्तश्च मधुरां वाणीं तया स मदनार्दितः।।5.58.76।। सीतया तव किं कार्यं महेन्द्रसमविक्रमः।
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मदनार्दितः tormented by god of love, सः he, तया such, मधुराम् sweet, वाणीम् words, उक्तश्च having spoken, महेन्द्रसमविक्रमः equal to Mahendra in might, सीतया Sita, तव your, किं कार्यम् for what purpose.
"She spoke sweetly to Ravana, who was tormented by the god of love saying, 'For what purpose do you desire Sita? You are equal to Mahendra in might'.