Valmiki Ramayana Yuddha Kanda Sarga 117 Shloka 12
Original Shlokaतस्यास्तद्वचनंश्रुत्वाप्रत्युवाचविभीषणः । यथाहरामोभहर्तातेतत्तथाकर्तुमार्हसिमार्हसि ।।6.117.12।।
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तस्याः her, तत् that, वचनम् words, श्रुत्वा hearing, विभीषणःVibheeshana, प्रत्युवाच replied in turn, ते you, भर्ता husband, रामःRam, यथा so, आह I, तत् that, तथआ that only, कर्तुम् will do, अर्हसि ought to
Hearing Sita's words Vibheeshana replied saying," You will and ought to do what your husband Rama has said."