Valmiki Ramayana Yuddha Kanda Sarga 67 Shloka 19
Original Shlokaस शूलमासाद्यतटित्प्रकाशंगिरिर्यथाप्रज्वलिताग्रशृङ्गम् । बाह्वन्तरेमारुतिमाजघानगुहोऽचलंक्रौञ्चमिवोग्रशक्त्या ।।6.67.19।।
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सः that, गिरिः mountain, प्रज्वलिताग्रशृङ्गंयथा like a blazing peak, तडित्प्रकाशम् shining like lightning, शूलम् pike, आविध्य pierced, गुहः as Guha (son of Lord Siva), उग्रशक्त्या formidable, क्रौञ्चम् अचलमिव like the Krauncha mountain, मारुतिम् at Maruti, बाह्वन्तरे in between shoulders, the breast, आजघान struck.
Kumbhakarna ,who was like a mountain blazing like fire, pierced at Maruti's chest with his pike shining like lightning just as Guha struck at Krauncha mountain.