Valmiki Ramayana 6.69.97

अथाङ्गदो वज्रसमानवेगं संवर्त्य मुष्टिं गिरिशृङ्गकल्पम्।निपातयामास तदा महात्मा नरान्तकस्योरसि वालिपुत्रः॥

athāṅgado vajrasamānavegaṃ saṃvartya muṣṭiṃ giriśṛṅgakalpam |nipātayāmāsa tadā mahātmā narāntakasyorasi vāliputraḥ ||

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