Valmiki Ramayana 6.80.40
अस्यैव तु वधे यत्नं करिष्यावो महाबल।आदेक्ष्यावो महावेगानस्त्रानाशीविषोपमान्॥
asyaiva tu vadhe yatnaṃ kariṣyāvo mahābala |ādekṣyāvo mahāvegānastrānāśīviṣopamān ||
Our plain-language meaning of this verse is waiting for scholar review.
Open in the book