Ramayana
नष्टधर्मव्यवस्थाता काले काले प्रजाकरः । उत्पद्यते दस्युवधे शरणागतवत्सलः ॥ 7-8-27 ॥
Restorer of the order of dharma when it has perished, benefactor of creatures from age to age, fond of those who seek refuge, He takes birth for the destruction of the wicked.
english translation