Ramayana
त्वं गतिः परमेशान पूर्वजो जगतः पिता । रक्षार्थं सर्वभूतानां विष्णुत्वमुपजग्मिवान् ॥ 7-85-18 ॥
"You are the refuge, O supreme lord, the firstborn, the father of the universe; for the protection of all beings you assumed the state of Vishnu."
english translation