Valmiki Ramayana Ayodhya Kanda Sarga 33 Shloka 7

ऐश्वर्यस्य of affluence, रसज्ञः सन् while enjoying, कामिनाम् for those who have desires, कामदः चैव fulfiller of desires (Rama), धर्मगौरवात् out of veneration for righteousness, पितरं to father, अनृतम् false, कर्तुम् to make, नेच्छत्येव does not wish.

Rama who enjoyed the comforts of affluence gratifies those who have desires. Out of veneration for righteousness, he does not want to prove his father false (to his promise).