Valmiki Ramayana 6.92.13

कृतं परमकल्याणं कर्म दुष्करकर्मणा।अद्य मन्ये हते पुत्रे रावणं निहतं युधि।अद्याहं विजयी शत्रौ हते तस्मिन् दुरात्मनि॥

kṛtaṃ paramakalyāṇaṃ karma duṣkarakarmaṇā |adya manye hate putre rāvaṇaṃ nihataṃ yudhi |adyāhaṃ vijayī śatrau hate tasmin durātmani ||

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