Valmiki Ramayana 4.28.12
नील मेघ आश्रिता विद्युत् स्फुरंती प्रतिभाति मे ।स्फुरंती रावणस्य अंके वैदेही इव तपस्विनी॥
nīla megha āśritā vidyut sphuraṃtī pratibhāti me |sphuraṃtī rāvaṇasya aṃke vaidehī iva tapasvinī ||
Our plain-language meaning of this verse is waiting for scholar review.
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