Valmiki Ramayana Sundara Kanda Sarga 53 Shloka 36

अथवा or else, यत् such an incident, प्लवता while I leaped, मया by me, रामप्रभावात् by the power of Rama, पर्वत: a mountain, सरितां पतौ foating in the ocean, आश्चर्यम् wonderful, दृष्टम् saw, तत इदम् that this, व्यक्तम् now It is clear.

'It must be due to the power of Rama, by which I found a wonderful mountain emerging from the sea to give me protection while I was crossing the ocean. Now evidently this is due to Rama's power (that my tail is not burning me).