Valmiki Ramayana Kishkindha Kanda Sarga 39 Shloka 8
Original Shlokaएतस्मिन्नन्तरे चैव रजस्समभिवर्तत। उष्णां तीव्रां सहस्रांशोश्छादयद्गगने प्रभाम्।।4.39.8।।
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एतस्मिन्नन्तरे in the mean while, गगने in the sky, सहस्रांशोः thousandrayed Sun's, उष्णां तीव्राम् intense heat, प्रभाम् radiance, छादयत् covering, रजः dust, समभिवर्तत was raised.
In the mean while the dust raised (by army of monkeys) all over obscured the intense heat from the sky and the radiance of the thousandrayed Sun.