Valmiki Ramayana Yuddha Kanda Sarga 77 Shloka 16
Original Shlokaततःपुस्फोटचर्मास्यप्रसुस्राव च शोणितम् ।।6.77.16।। मुष्टिनातेनसञ्जज्ञेमेघेविद्युदिवोत्थिता ।
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तेन, मुष्टिना by the fist, तत: then, अस्य his, चर्मपुस्फोट skin split, शोणितं च even blood, प्रसुस्राव started flowing, मेघे cloud, विद्युत् lightning, उत्थिताइव risen like, सञ्जज्ञे appeared
Then Nikumbha's skin split, and blood started flowing, which appeared as though lightning had risen in the cloud.