Valmiki Ramayana Bala Kanda Sarga 11 Shloka 21
Original Shlokaऋषिपुत्र: प्रतिश्रुत्य तथेत्याह नृपं तदा। स नृपेणाभ्यनुज्ञात: प्रययौ सह भार्यया।।1.11.21।।
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तदा then, ऋषिपुत्र: son of sage, प्रतिश्रुत्य having assented, नृपम् the king, तथा इति so it shall be done, आह said, नृपेण by king, अभ्यनुज्ञात: having been permitted, भार्यया सह along with his wife, प्रययौ departed.
The son of the sage assented to the king's command saying 'So be it'. And permitted by him, departed along with wife (for Ayodhya).