Valmiki Ramayana Aranya Kanda Sarga 18 Shloka 1
Original Shlokaततश्शूर्पणखां रामः कामपाशावपाशिताम्। स्वच्छया श्लक्ष्णया वाचा स्मितपूर्वमथाब्रवीत्।।3.18.1।।
1 source checked for this shloka
ततः then, रामः Rama, कामपाशावपाशिताम् to one who was overcome by lust, शूर्पणखाम् to Surpanakha, स्वच्छया with clear, श्लक्ष्णया with lucid, वाचा with words, स्मितपूर्वम् with a smile, अथ then, अब्रवीत् said.
To Surpanakha bound by the noose of passion Rama with a smile replied in a clear, lucid manner: Rama directs Surpanakha to Lakshmana-- Surpanakha approaches Lakshmana to marry her -- Lakshmana cuts her nose and ears-- Surpanakha narrates the event to Khara.