Ramayana
मम मातृष्वसुर्भ्राता रावणो राक्षसाधिपः । हतो रामेण दुर्बुद्धे स्त्रीहेतोः पुरुषाधम ॥ 7-68-14 ॥
"Ravana, the lord of the Rakshasas, the brother of my mother's sister, was slain by Rama for the sake of a woman, O dull-witted one, O vilest of men."
english translation