Yuddha Kanda 49.32

Seeing Vibheeshana resembling a dark mountain, thinking him to be Indrajith, all the Vanaras ran from there. ।। इत्यार्षेवाल्मीकीयेश्रीमद्रामायणेआदिकाव्येयुद्धकाण्डेएकोनपञ्चाशस्सर्गः ।। This is the end of the forty ninth sarga of Yuddha Kanda of the first epic the holy Ramayana composed by sage Valmiki.