Valmiki Ramayana Yuddha Kanda Sarga 122 Shloka 23
Original Shlokaनिवृत्तवनवासोऽसिप्रतिज्ञापूरितात्वया । रावणं च रणेहत्वादेवताःपरितोषिताः ।।6.122.23।।
1 source checked for this shloka
निवृत्तवनवासः period of exile completed, असि even though, त्वया you, प्रतिज्ञा promise, पूरिता fully, रणे in the battlefield, रावणम् Ravana, हत्वा death, देवताः च gods also, परितोषिताः gratified
"The period of your exile has been completed, my promise has been fulfilled in the battlefield and the gods have also gratified you."