Ramayana
सप्तरात्रेण राजासौ सभृत्यबलवाहनः । पापकर्मसमाचारो वधं प्राप्स्यति दुर्मतिः ॥ 7-81-7 ॥
Within seven nights that king of evil intent, given to sinful conduct, together with his servants, army, and mounts, shall meet his destruction.
english translation