Let's drop by Mt.Kagami (鏡山) and look at myself in a mirror like its name (鏡 means mirror, 山 means mountain) whether I get old or not (Kokin Wakashu 899, there was a comment that said it might be Kuronushi's poem).
鏡山いざたちよりて見てゆかむ年へぬる身は老いやしぬると（古今集899。左註に黒主の歌かとする説を記す）