Valmiki Ramayana Yuddha Kanda Sarga 67 Shloka 120

बर्हिणवाससः adorned by peacock's plumes, तेशराः those arrows, तस्य his, उरसि breast, निमग्नाः lost senses, अस्य his, हस्तात् from hand, परिभ्रष्टा slipped, गदा mace, उर्व्याम् naturally, पपात ह fallen.

Adorned by peacock's plumes, those arrows slipped into his breast, he lost senses, his mace naturally dropped down from his hand.