Valmiki Ramayana Aranya Kanda Sarga 25 Shloka 10
Original Shlokaते रामे शरवर्षाणि व्यसृजन् रक्षसां गणाः।।3.25.10।। शैलेन्द्रमिव धाराभिर्वर्षमाणा वलाहकाः।
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ते they, रक्षसाम् of demons, गणाः battalions, रामे on Rama, वर्षमाणाः raining, वलाहकाः clouds, धाराभिः by downpour, शैलेन्द्रमिव like moutains, शरवर्षाणि rain of arrows, व्यसृजन् sent forth.
The battalions of demons sent down streams of arrows on Rama just like clouds downpour on mountains.