Valmiki Ramayana 7.15.31
आग्नेयमस्त्रं तस्मै स मुमोच धनदस्तदा ।राक्षसेन्द्रो वारुणेन तदस्त्रं प्रत्यवारयत्॥
āgneyamastraṃ tasmai sa mumoca dhanadastadā |rākṣasendro vāruṇena tadastraṃ pratyavārayat ||
Our plain-language meaning of this verse is waiting for scholar review.
Open in the book