Valmiki Ramayana 6.122.23

निवृत्तवनवासो ऽसि प्रतिज्ञा सफला कृता ।रावणं च रणे हत्वा देवास्ते परितोषिताः॥

nivṛttavanavāso 'si pratijñā saphalā kṛtā |rāvaṇaṃ ca raṇe hatvā devāste paritoṣitāḥ ||

Our plain-language meaning of this verse is waiting for scholar review.