Valmiki Ramayana Yuddha Kanda Sarga 111 Shloka 20
Original Shlokaस शरोरावणंहत्वारुधिरार्द्रीकृतच्छविः । कृतकर्मानिभृतवत्स्वतूणींपुनराविशत् ।।6.111.20।।
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सःशरः that arrow, रावणम् Ravana, हत्वा on killing, रुधिरार्द्रीकृतच्छविः soaked in blood, कृतकर्मा having accomplished the task, निभृतवत् quietly, स्वतूणीम् its quiver, पुनः again, अविशत् reentered
That arrow of Rama, on killing Ravana, soaked in blood, having accomplished the task quietly reentered its quiver.