Valmiki Ramayana Sundara Kanda Sarga 22 Shloka 37
Original Shlokaप्रतिलोमानुलोमैश्च सामदानादिभेदनैः।।5.22.37।। आवर्जयत वैदेहीं दण्डस्योद्यमनेन च।
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प्रतिलोमानुलोमैश्च adopting means favourable or contrary to her will, सामदानादिभेदनैः by gentle or conciliatory, deceptive or coercive means, दण्डस्य or punishment, उद्यमनेन च by adopting, वैदेहीम् Vaidehi, आवर्जयत attract her attention towards me.
"By adopting means favourable or contrary to her will or through persuasion or coercion or through reward or punishment, draw Vaidehi's mind towards me." (said Ravana).