Valmiki Ramayana Bala Kanda Sarga 43 Shloka 24

क्वचित् at some places, सलिलम् water, सलिलेनैव with waters alone, अभ्याहतम् was dashing against, मुहु: repeatedly, ऊर्ध्वमुखम् upwards, गत्वा having gone, पुन: again, वसुधातलम् on the ground, पपात fell down.

Sometimes waves dashed against waves. They rose repeatedly upwards and fell down on the ground.