It was a reply to Sojo Henjo, a poet in Kokin Wakashu (A Collection of Ancient and Modern Japanese Poetry), and it was dated May 27 with the year unknown, but it is estimated to be a letter in his later years.
古今和歌集の歌人である遍昭僧正への返信で、年はなく5月27日の日付があるのみであるが、晩年の手紙と推定される。