Valmiki Ramayana Sundara Kanda Sarga 52 Shloka 4

ततः then, निश्चितार्थः decided about action, शत्रुजित् winner of enemies, वाक्यविशारदः skilled in speech, पूज्यम् reverential, अग्रजम् to his elder brother, अत्यर्थम् profound, हितम् wholesome, वाक्यम् words, साम्ना by soothing words, उवाच addressed.

Then Vibhishana, who was skilled in speech having decided about his duty addressed his reverential elder brother, a conqueror of enemies in soothing, words in a meaningful, wholesome manner.