Valmiki Ramayana Ayodhya Kanda Sarga 11 Shloka 21
Original Shlokaतत् प्रतिश्रुत्य धर्मेण न चेद्दास्यसि मे वरम्। अद्यैव हि प्रहास्यामि जीवितं त्वद्विमानिता।।2.11.21।।
1 source checked for this shloka
तत् that, प्रतिश्रुत्य having vowed, मे my, वरम् boon, धर्मेण rightfully, न दास्यसि चेत् if you do not grant, त्वद्विमानिता disgraced by you, अद्यैव right away, जीवितम् life, प्रहास्यामि हि shall give up.
The boons you have vowed to give shall rightfully be given to me. If not, disgraced by you I shall give up my life right away.