32. In the river in the mountain, there is a weir that was made by wind and made from colored leaves, which are caught and unable to flow downstream. ('Kokin Wakashu' Autumn (2), 303)
32番　山川に風のかけたる　しがらみは　流れもあへぬ　紅葉なりけり（「古今和歌集」秋下303）