Valmiki Ramayana Ayodhya Kanda Sarga 3 Shloka 23
Original Shlokaस तथेति प्रतिज्ञाय सुमन्त्रो राजशासनात्।।2.3.23।। रामं तत्रानयाञ्चक्रे रथेन रथिनां वरम्।
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सः that, सुमन्त्रः Sumantra, तथा इति so be it, प्रतिज्ञाय after acknowledging, राजशासनात् by the king's command, रथिनाम् among charioteers, वरम् excellent, रामम् Rama, रथेन on chariot, तत्र there, आनयाञ्चक्रे brought.
In response to the king's command Sumantra, the best of charioteers said, 'so be it' and fetched Rama in a chariot.