Valmiki Ramayana Yuddha Kanda Sarga 91 Shloka 20

महाकार्मुकनिःसृताः released from the great bow, तेthose, बाणाः arrows, तस्य his, कायम् body, निर्भिद्य entering, रक्ताः red, महोरगाः huge serpent, इव like, धरणीम् ground, निपेतुःdropped

Those arrows released from the great bow of Lakshmana, entered the body of Indrajithand fell on the ground like a huge red serpent.