Valmiki Ramayana Yuddha Kanda Sarga 55 Shloka 19

कौशेयोद्धूतपाण्डुना whitish like silk shaken by wind, तेनरजसा by that dust, सम्वृतानि surrounding, भूतानि living beings, रणाजिरे in the battlefield, अन्योन्यम् one another, सददृशुः could not see.

The combatants could not see one another in the battlefield, and it seemed as though white silk piece was shaken by the wind by the appearance of the surrounding dust.