Valmiki Ramayana Ayodhya Kanda Sarga 18 Shloka 7
Original Shlokaअचिन्त्यकल्पं हि पितुस्तं शोकमुपधारयन्। बभूव संरब्धतर स्समुद्र इव पर्वणि।।2.18.7।।
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अचिन्त्यकल्पम् beyond imagination, नृपतेः king's,तं शोकम् such sorrow, उपधारयन् reflecting, पर्वणि on fullmoon day, समुद्र इव like an ocean, संरब्धतरः highly perturbed बभूव became.
The more Rama reflected on the incomprehensible sorrow of the king, the more he became perturbed like an ocean on the new Moon day.