Ramayana
तस्मिन्यद्यसमाप्ते च जप्यहोमे विभावसौ । युध्येयं देव सङ्ग्रामे तदा मे स्याद्विनाशनम् ॥ 7-30-16 ॥
"But if, O god, while that muttered prayer and oblation in the Fire is left unfinished, I should fight in battle, then let there be destruction for me."
english translation