Valmiki Ramayana 6.60.40

तं शैलशृङ्गैर्मुसलैर्गदाभिर्वृक्षैस्तलैर्मुद्गरमुष्टिभिश्च ।सुखप्रसुप्तं भुवि कुम्भकर्णं रक्षांस्युदग्राणि तदा निजघ्नुः॥

taṃ śailaśṛṅgairmusalairgadābhirvṛkṣaistalairmudgaramuṣṭibhiśca |sukhaprasuptaṃ bhuvi kumbhakarṇaṃ rakṣāṃsyudagrāṇi tadā nijaghnuḥ ||

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