Valmiki Ramayana Yuddha Kanda Sarga 25 Shloka 20
Original Shlokaनचेदंग्रहणंप्राप्यभेत्तव्यंजीवितंप्रति । न्यस्तशस्त्रौगृहतौवानदूतौवधमर्हतः ।।6.25.20।।
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इदम् thus, ग्रहम् having been caught, प्राप्य by us, जीवितंप्रति in turn of your life, न not, वा or, भेतव्यम् apprehension, न्यस्तशस्त्रौ those who do not possess, गृहीतौ wield, दूतौ envoys, वदम् to slay अर्हतः ought to.
As you have been caught by us like this you need not have apprehension of your life. Those who do not possess wield or those who are envoys ought not to be slayed.