Valmiki Ramayana Sundara Kanda Sarga 54 Shloka 45

महात्मा a great self, सः he, सुबहून् many of them, तान् राक्षसान् the demons, हत्वा having killed, बहुपादपम् having many trees, तत् वनं च that garden also, भङ्क्त्वा after breaking, रक्षोभवनेषु in the mansions of demons, अग्निम् fire, विसृज्य after setting, मनसा in his mind, रामम् Rama, जगाम reached.

Great Hanuman, sought Rama's presence in his mind after killing many demons, breaking down many trees of the garden, and setting fire to the mansions of demons.