Valmiki Ramayana Ayodhya Kanda Sarga 75 Shloka 39

आर्यः esteemed one, यस्य whose, अनुमते with sanction, गतः exiled, सः that man, शत्रुपक्षभयङ्करे सङ्ग्रमे in war, समुपोढे when at its peak, पलायमानः feeling, वध्येत be slain.

May the one who counselled the exile of my esteemed brother acquire the same sin like a warrior, dreadful to the enemy side who will be slain while fleeing from the war at its peak