Valmiki Ramayana Yuddha Kanda Sarga 85 Shloka 1

शोककर्शितः immersed in grief, राघवः Raghava, तस्य his, तत् those, वचनम् words, श्रुत्वा having heard, तेन by that रक्षसा Rakshasa, यत् which, उक्तम् was, व्यक्तम् spoken, नोपधारयते could not know

Immersed in grief, Raghava could not make out the words spoken by Vibheeshana. Sri Rama sends Lakshmana to Nikumbha to kill Indrajith. Angada, Hanuman and Jambavan accompany Lakshmana.