Valmiki Ramayana Sundara Kanda Sarga 1 Shloka 58
Original Shlokaतस्य विद्युत्प्रभाकारे वायुमार्गानुसारिणः।।5.1.58।। नयने विप्रकाशेते पर्वतस्थाविवानलौ।
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वायुमार्गानुसारिणः of him following the direction of the wind, तस्य his, विद्युत्प्रभाकारे both appearing like the glow of lightning, नयने eyes, पर्वतस्थौ on the mountain, अनलौ इव like two fires, विप्रकाशेते very glittering.
As he was moving in the sky following the direction of the wind, his eyes blazed like two fires burning on the mountain, flashing like lightning.