Valmiki Ramayana Sundara Kanda Sarga 48 Shloka 1

ततः then, महात्मा great, सः he,रक्षोधिपतिः demon king, हनूमता by Hanuman, कुमारे son, अक्षे Aksha, निहते was killed, सरोषः angry, मनः in mind, समाधाय controlled, देवकल्पम् was like a god, इन्द्रजितम् to Indrajit, समादिदेश ordered.

Thereafter the great demon king, mighty angry at the death of Aksha in the hands of Hanuman, controlled his feeling and ordered Indrajit who was like a godhead. Combat between Hanuman and Ravana's son, Indrajit -- Indrajit captures Hanuman by Brahmastra and gets him to Ravana