Valmiki Ramayana Sundara Kanda Sarga 37 Shloka 27
Original Shlokaयथैवाहमिह प्राप्तस्तथैवाहमसंशयः। यास्यामि पश्य वैदेहि त्वामुद्यम्य विहायसम्।।5.37.27।।
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वैदेहि Vaidehi, यथैवाहमिह just as I reached here, प्राप्तस्तथैव in the same way I reached, अहम I, त्वामुद्यम्य taking you on my back, यास्यामि will go, विहायसम् across the sky, नसंशयः no doubt, पश्य you may see.
"O Vaidehi just as I reached here I shall beyond doubt take you on my back in the same way across the sky without any difficulty. See.