Valmiki Ramayana Ayodhya Kanda Sarga 46 Shloka 12
Original Shlokaसोऽश्वान्सुमन्त्रः संयम्य सूर्येऽस्तं समुपागते। प्रभूतयवसान् कृत्वा बभूव प्रत्यनन्तरः।।2.46.12।।
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सः सुमन्त्रः that Sumantra, सूर्ये Sun, अस्तम् was setting, समुपागते was setting, अश्वान् horses, संयम्य tethered, प्रभूतयवसान् with abundant fodder, कृत्वा having made, प्रत्यनन्तरः बभूव sat in their proximity.
As the Sun was setting, Sumantra tethered the horses, fed them with abundant fodder and sat close to them.