Ramayana
अयं च पुत्रो ऽतिबलस्तव रावण वीर्यवान् । जगतीन्द्रजिदित्येव परिख्यातो भविष्यति ॥ 7-30-5 ॥
"And this son of yours, Ravana, of immense strength and valor, shall become renowned throughout the world by the very name Indrajit (Conqueror of Indra)."
english translation