Valmiki Ramayana Yuddha Kanda Sarga 83 Shloka 31
Original Shlokaममचेदंमतंतातधरोऽयमितिराघव । धर्ममूलंत्वयाछिन्नंराज्यमुत्सृजतातदा ।।6.83.31।।
1 source checked for this shloka
तात dear, राघव Raghava, अयम् this, धर्मःइति dharma like this, मम च me too, इदम् thus, मतम् opinion, तदा then, राज्यम् kingdom, उत्सृजता giving up, त्वया by you, धर्ममूलम् dharma as root, छिन्नम् wonderful
"Dear Raghava! In my opinion also depending on desire and context, following dharma or adharma is proper. You have severed the roots of dharma by giving up the kingdom."