Valmiki Ramayana Yuddha Kanda Sarga 94 Shloka 10
Original Shlokaएवंप्रवृत्तेसङ्ग्रामेह्यद्भुतंसुमहद्रजः ।।6.94.10।। रक्षसांवानराणां च शान्तंशोणितविस्रवैः ।
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एवम् in that manner, सङ्ग्रामे in war, प्रवृत्ते in progress, अद्भुतम् wonderful, सुमहत् huge, रजःdust, रक्षसाम् Rakshasas, वानराणां च Vanaras also, शोणितविस्रवैः by the flow of blood, शान्तम् subsided
As the war was in progress, wonderful dust had risen which subsided by the flow of blood of Vanaras and Rakshasas.