Valmiki Ramayana Bala Kanda Sarga 34 Shloka 22

इति In this way, तै: by them, मुनिशार्दूलै: by the best of ascetics, प्रशस्त: praised, श्रीमान् the auspicious one, कुशिकात्मज: son of Kusika, श्रीमान् the lustrous, अंशुमान् Sun, अस्तगतमिव setting behind Asta mountains, निद्राम् sleep, उपागमत् obtained.

In this way, adored by the best of ascetics, the auspicious son of Kusika, went to sleep like the lustrous Sun setting.