Valmiki Ramayana 7.12.21

अमोघां तस्य शक्तिं च प्रददौ परमाद्भुताम् ।परेण तपसा लब्धां जघ्निवाँल्लक्ष्मणं यया॥

amoghāṃ tasya śaktiṃ ca pradadau paramādbhutām |pareṇa tapasā labdhāṃ jaghnivām̐llakṣmaṇaṃ yayā ||

Our plain-language meaning of this verse is waiting for scholar review.