Poem 53 - Lying all alone moaning the fact that you are not coming, do you realize the emptiness of that night till the daylight comes ("Shui Waka Shu" [Collection of Gleanings], Koiuta [lovers poetry] Part Four, poem 912).
53番なげきつつひとりぬる夜のあくるまはいかに久しきものとかはしる（「拾遺和歌集」恋四・912）