Valmiki Ramayana Yuddha Kanda Sarga 105 Shloka 26

राक्षसान्तकृत् one who can put an end to Rakshasas, सःरामः that Rama, आत्मगतानि his own past, शुभानि auspicious, एतानि all these, चिह्नानि signs, विज्ञाय knowing, रावणम् Ravana, भूयःएव more vehemently, अर्दयत् strike

Rama, who can put an end to Rakshasas, knower of his own self having experienced auspicious signs, began to strike at Ravana more vehemently.