《太平广记·卷一百零七·报应六（》
从此后每当听到念经，就倚着墙壁专心听经。一个多月，疑心自己象能够念经一样，几天后，偶然进入寺庙，碰着一个老和尚，施礼，和尚问他何事，他就指着口中告诉和尚他说不出话。
自后每闻念经，即倚壁专心而听之，月余，疑如念得。数日，偶行入寺，逢一老僧，礼之。僧问何事，遂指口中哑。
From then on, whenever he heard the sutra being recited, he would lean on the wall and listen attentively. After a month or more, he doubted himself, as though he could recite the sutra. A few days later, by chance he entered a temple and met an old monk. He bowed to him, and the monk asked him what was the matter. He pointed at his mouth and told the monk that he could not speak.