Valmiki Ramayana Kishkindha Kanda Sarga 31 Shloka 23

ततः then, रोमहर्षणाः who causes horripilation, गिरिकुञ्जरमेघाभाः fierceful like the mountains, elephants and clouds, हरयः the monkeys, सचिवसन्दिष्टाः commaded by the ministers, तदा then, नगरात् from the city, निर्ययुः they left.

Commanded by the ministers, the monkeys who looked like fierce mountains, elephants and clouds that caused horripilation, left the place at once.