Valmiki Ramayana Ayodhya Kanda Sarga 42 Shloka 12
Original Shlokaनिवृत्त्यैव निवृत्त्यैव सीदतो रथवर्त्मसु। राज्ञो नातिबभौ रूपं ग्रस्तस्यांशुमतो यथा।।2.42.12।।
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रथवर्त्मसु trail of the chariot, निवृत्त्यैव निवृत्त्यैव turning again and again, सीदतः grieving, राज्ञः the king's, रूपम् countenance, ग्रस्तस्य as if swallowed by Rahu, अंशुमत: यथा like Sun, नातिबभौ did not shine.
Turning back again and again at the trail of (Rama's) chariot, the grieving king appeared lustreless like the Sun in eclipse.