Valmiki Ramayana Ayodhya Kanda Sarga 118 Shloka 51
Original Shlokaदीयमानां न तु तदा प्रतिजग्राह राघवः। अविज्ञाय पितुश्छन्दमयोध्याऽधिपतेः प्रभोः।।2.118.51।।
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तदा then, राघवः Rama, अयोध्याऽधिपतेः of the king of Ayodhya, प्रभोः lord, पितुः his father's, छन्दम् opinion, अविज्ञाय without knowing, दीयमानाम् being offered by father, न तु प्रतिजग्राह did not accept.
Then Rama did not accept the offer of my father straightaway before he knew the opinion of his father Dasaratha, king of Ayodhya.