Valmiki Ramayana Yuddha Kanda Sarga 22 Shloka 1

अथ and thereafter, रघुश्रेष्ट the best one among Raghu's, सागरम् to ocean, दारुणम् terrific, वचः words, उवाच uttered, महार्णव ocean, अद्य now, सपाताळम् that under world, त्वाम् you, शोषयिष्यामि will make it dry.

Thereafter, Rama uttered, "I shall make you dry up to the underworld", to the ocean that made his terrific presence. The Sun god appears before Rama and sustains the construction of the bridge by Nila. Rama crosses the ocean accompanied by Lakshmana and the army.