Valmiki Ramayana Ayodhya Kanda Sarga 63 Shloka 24

अथ thereafter, अन्धकारे in the darkness, अचक्षुर्विषये not within the range of sight, नर्दतः making sounds, वारणस्येव like the sound of an elephant, जले in water, पूर्यतः being filled, कुम्भस्य a pitcher, घोषम् sound, अश्रौषम् heard.

Then at a place that was out of the range of my sight in darkness I heard the sound of a pitcher being filled with water which resembled the sound of an elephant.