When MINAMOTO no Toshiaki, who had the title of Gon no Chunagon (Provisional Middle Councilor), saw this and suggested senko (departure of the emperor from the capital) since the Emperor should not be touched by Kegare (impurity), Emperor Shirakawa retorted while saying the famous anecdote, 'a practice is established by this case.'
これを見かねた権中納言源俊明が、天皇は穢れに触れてはいけないからと遷幸を勧めると、「例はこれよりこそ始まらめ」と反論した逸話は有名である。