Rāmāyaṇacampū 3.31

3.31

Then, with boundless joy, Jānakī spoke to him:
“O noble one! Death approaches this wicked-souled one in every way; so it was told by Vibhīṣaṇa’s daughter named Analā, sent by her mother. Furthermore, this man of ignoble nature will not surrender me to the noble prince without the fourth stratagem. Surely I too shall not be able to sustain my wretched breath beyond a month.”
Hearing this, Māruti said: “O noble lady, do not fear! Carrying you indeed, having swiftly leaped over the ocean, I shall reach the vicinity of the lotus-feet of the best of the Raghus. Do not consider me incapable!”
Moreover:
He assumed an immense growth comparable to a great mountain,
by which indeed the mass of waters assumed a state equal to a little ditch. (31)