Valmiki Ramayana Yuddha Kanda Sarga 71 Shloka 110

ततो that, अग्निदीप्तः glowing like fire, सःशरः those arrows, अद्भुतविग्रहाणि wonderful shapes, तानि them, आयुधानि weapons, मोघानि unsuccessful, कृत्वा becoming, तस्य its, अतिकायस्य Atikaya's, किरीटजुष्टम् decked with crown, शिरः head, प्रगृह्य seizing, जहार severed.

This great arrow of Lakshmana glowing like fire rendered the weapons in wonderful shapes released by Atikaya unsuccessful and severed the head of Atikaya decked with a crown.