Valmiki Ramayana Yuddha Kanda Sarga 86 Shloka 6
Original Shlokaविभीषणवच्श्रुत्वालक्ष्मणश्शुभलक्षणः । ववर्षशरवर्षाणिराक्षसेन्द्रसुतंप्रति ।।6.86.6।।
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शुभलक्षणः auspicious, लक्ष्मणः Lakshmana, विभीषणवचः Vibheeshana's words, श्रुत्वा on hearing, राक्षसेन्द्रसुतं Rakshasa king's son प्रति in turn, शरवर्षाणि rain of arrows, ववर्ष rained
Lakshmana, who had auspicious marks, on hearing Vibheeshana rained showers of arrows on Ravana's son.