Ramayana
राजा वा राजमात्रो वा किं तदा नात्र कश्चन । धर्षणं यत्र न प्राप्तो रावणो राक्षसेश्वरः ॥ 7-31-3 ॥
"Was there then no king, nor even one of kingly rank here at all, at whose hands Ravana, the lord of the rakshasas, did not meet with humiliation?"
english translation