Ramayana
ततो मृत्युः क्रुद्धतरो वैवस्वतमभाषत । मुञ्च मां समरे यावद्धन्मीमं पापराक्षसम् । नैषा रक्षो भवेदद्य मर्यादा हि निसर्गतः ॥ 7-22-24 ॥
Then Death, growing yet more wrathful, said to the son of Vivasvat: 'Release me into battle, that I may slay this sinful rakshasa; for this rakshasa shall not survive today, since such is the bound fixed by nature.'
english translation