Ramayana
तच्छिरो राक्षसेन्द्रस्य चक्रोत्कृत्तं बिभीषणम् । पपात रुधिरोद्गारि पुरा राहुशिरो यथा ॥ 7-7-44 ॥
That terrible head of the lord of the rakshasas, severed by the discus, fell down spurting blood, as of old the head of Rahu had fallen.
english translation