Valmiki Ramayana Kishkindha Kanda Sarga 38 Shloka 2

सः he, कृतकर्मणः those who have done the task asigned, शूरान् तान् those heroes, हरीन् the monkeys, विसर्जयित्वा after sending away, आत्मानम् himself, महाबलम् powerful, राघवं च and Rama, कृतार्थम् achieved, मेने felt.

The monkey heroes sent by Sugriva performed the task assigned to them and felt powerful Rama's task has been achieved (a successful beginning has been made).