OE no Mochitoki (a grandson of a poet, OE no Chisato, and a professor of literature) who is said to have actually listened to Tadasuke's lecture at home in 999, wrote down how great his lecture was in the diary, and in later days, it was highly praised by OE no Masafusa and Sadatsugu HAMURO.
長保元年の自宅での講義を実際に聞いたとされる大江以言（大江千里(歌人)の孫で文章博士）は、允亮の講義の素晴らしさを日記で記しており、後世においても大江匡房や葉室定嗣などが高く評価している。