《太平广记·卷一百一十八·报应十》
在家里同门生作饭时，在锅灶里得到一只龟。长有一尺左右，趴在灰中，好像不把被烧烤放在心上。于是刘沼为龟摆设了斋会，把龟放到娄湖里。刘沼不久就升迁为秣陵县令。
与门生作食次，灶里得一龟，长尺许，在灰中，了不以燔炙为弊，刘为设斋会，放之于娄湖，刘俄迁秣陵令。
While cooking with his disciples at home, he found a tortoise in the kitchen stove. It was about a foot long and was lying in the ashes as if it were unaffected by the heat. Liu Nu set up a vegetarian feast for the tortoise and released it into Lou Lake. Soon after, Liu Nu was promoted to magistrate of Maling county.