Ramayana
संवर्त इव लोकानां क्रुध्यतोरभवत्तदा । राक्षसानां च मुख्यस्य प्रेतानामीश्वरस्य च ॥ 7-22-19 ॥
At that time, as the two grew wrathful, there arose, like the dissolution of the worlds, the conflict between the chief of the rakshasas and the lord of the departed.
english translation